Lee was one of seven Warriors in double figures and Golden State shot 53 percent from the field in boosting its record to 3-2.
The Warriors were trailing by 3 midway through the third period but closed the quarter on a 17-6 run. Cleveland came no closer than 8 points in the fourth.
The Cavaliers, who have three more to play on a cross-country road trip that will conclude in Brooklyn next Tuesday, were led by Kyrie Irving with 28 points.
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