AP photo by John Bazemore / Atlanta Hawks guard Trae Young, with ball, is guarded by the Philadelphia 76ers' Ben Simmons during Friday night's game in Atlanta.

ATLANTA — The Philadelphia 76ers remained confident after blowing big leads in back-to-back losses to the Atlanta Hawks, and they continued to avoid doubting themselves after falling behind by 12 points early in Game 6.

Finally, the 76ers showed their belief in their talent — and their No. 1 seed — were justified.

Seth Curry hit six 3-pointers and scored 24 points as the Sixers avoided elimination in their Eastern Conference semifinal series by beating the fifth-seeded Hawks 104-99 on Friday night.

The visitors overcame Atlanta point guard Trae Young's 34-point performance to force Game 7 at 8 p.m. Sunday in Philadelphia.

"You saw the fight and grit of a whole group," said Tobias Harris, who also had 24 points for Philadelphia and made four free throws in the final 13 seconds to protect the lead.

Joel Embiid added 22 points and 13 rebounds.

"Tonight I think we showed that mental toughness and came out on top," Philadelphia's Ben Simmons said.

Curry shot 6-for-9 from outside the arce as he served as the answer for Young's long-distance shooting.

"It's fun. It's a lot of fun," Curry said. "That's a great team over there. ... You've just got to weather the storm and come back at them at the other end."

Young's long 3, just before the shot clock expired, cut Philadelphia's lead to 94-93. Embiid answered with a basket. Free throws by Embiid and Tyrese Maxey, who scored 16 points off the bench, pushed the advantage to 98-93.

Danilo Gallinari's dunk with 20 seconds remaining cut the lead to three points, but the Sixers made six of six free throws to close the game.

The Hawks rallied from deficits of 18 and 26 points to win back-to-back games and were in position to clinch the series at home. Instead, they face the prospect of not playing another game at State Farm Arena until next season unless they can win on the road Sunday.

"That stung for us as a whole team," Harris said of blowing big leads in two losses. "We said there's really going to be a lot of criticism, but we really have to stay focused because the series isn't over. ... As a group we basically just locked into that."

The Hawks finally started strong, leading by 12 points in the first period and never trailing in the first half. Atlanta led 51-47 at halftime.

The Sixers opened the second half with a flurry of four 3s — including three by Curry — during a 14-0 run to open the second half that gave Philadelphia a 61-51 lead. It was 68-57 after a jumper by Embiid.

"I don't think we were tight," said Hawks interim coach Nate McMillan, who said the team struggled when it "just started to take quick shots. We didn't make them work on defense."

Atlanta cut the lead to 80-76 entering the final period.

After outscoring Philadelphia 40-19 in the fourth quarter of their 109-106 comeback win in Game 5, the Hawks took the momentum into the opening period Friday.

Collins' jumper to open the game helped Atlanta score 10 of the game's first 12 points. A steal and free throw by Kevin Huerter, who finished with 17 points, stretched the advantage to 12 points for the first time at 20-8. A long 3-pointer by Young again extended the lead to 12 at 25-13.

Maxey's strong play off the bench helped the Sixers recover. Maxey's floater early in the second period tied the game at 29.

After a timeout that gave McMillan the chance to send Collins and Young back into the game, Atlanta answered with a 10-0 run that included three baskets and a steal by Young. After his fast-break lay-in during the run, Young celebrated with a smile and a shoulder shimmy.

Atlanta guard Bogdan Bogdanovic scored seven points before leaving in the fourth with right knee soreness. He was ruled out for the remainder of the game.

With Atlanta leading 92-84 with 4:03 remaining, Embiid was called for an offensive foul when guarded by John Collins. Embiid fell on top of Collins on the court, and Collins then shoved the Sixers center before both rose to their feet. Embiid had his arms stretched out wide with Collins' hands around his neck as both walked off the court under the basket.

Officials reviewed the altercation and called technical fouls on each player with no free throws rewarded.

"I didn't think it was an offensive foul," Embiid said. "I was just trying to stay calm. I had my hands up. ... Somebody was pushing me from my back. I don't understand why I got a tech, but I did. We got the win. That's all that matters."

Clint Capela had 14 points and 11 rebounds for the Hawks, whose three wins in the series include two in Philadelphia.

"To be honest, I don't think any of that matters," Young said. "It's one game. They came in and took care of business to force a Game 7. ... All the other games don't mean anything. Both teams are in win or go home situations."