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3（X-5）-2（X+2）=5(X-7)30X-15/2+8x=20x-10/3+410y+1/6+2y-1/3=1-2y+1/4x-2/6-x+2/3=x-1/2+1
题目详情
3（X-5）-2（X+2）=5(X-7)
30X-15/2+8x=20x-10/3+4
10y+1/6+2y-1/3=1-2y+1/4
x-2/6-x+2/3=x-1/2+1
30X-15/2+8x=20x-10/3+4
10y+1/6+2y-1/3=1-2y+1/4
x-2/6-x+2/3=x-1/2+1
▼优质解答
答案和解析
3（X-5）-2（X+2）=5(X-7)
3x-15-（2x+4）=5x-35
3x-15-2x-4=5x-35
3x-2x-5x=-35+15+4
-4x=-16
x=4
30X-15/2+8x=20x-10/3+4
180x-45+48x=120x-20+24
180x+48x-120x=-20+24+45
108x=49
x=49/108
10y+1/6+2y-1/3=1-2y+1/4
120y+2+24y-4=12-24y+3
120y+24y+24y=12+3-2+4
168x=17
x=17/168
x-2/6-x+2/3=x-1/2+1
6x-2-6x+4=6x-3+6
6x-6x-6x=-3+6+2-4
-6x=1
x=-1/6
3x-15-（2x+4）=5x-35
3x-15-2x-4=5x-35
3x-2x-5x=-35+15+4
-4x=-16
x=4
30X-15/2+8x=20x-10/3+4
180x-45+48x=120x-20+24
180x+48x-120x=-20+24+45
108x=49
x=49/108
10y+1/6+2y-1/3=1-2y+1/4
120y+2+24y-4=12-24y+3
120y+24y+24y=12+3-2+4
168x=17
x=17/168
x-2/6-x+2/3=x-1/2+1
6x-2-6x+4=6x-3+6
6x-6x-6x=-3+6+2-4
-6x=1
x=-1/6
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