（1）2分之5-3x=3分之3+5x (2)4分之x+2-6分之2x-3=1 (3)12分之x-1=15分之2x (4)5分之y+17-4分之3y-7=-2
人气：417 ℃ 时间：2020-04-05 17:16:12
解答
1.x=21/19.2.x=0.3.x=-5/3.4.y=-13
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