问题标题:
【8y-(8-5y)=3y+2(4y+7)8-3y=6-x4x-3(20-x)=5x-7(20-8y-(8-5y)=3y+2(4y+7)8-3y=6-x4x-3(20-x)=5x-7(20-x)怎么解】
问题描述:
8y-(8-5y)=3y+2(4y+7)8-3y=6-x4x-3(20-x)=5x-7(20-
8y-(8-5y)=3y+2(4y+7)
8-3y=6-x
4x-3(20-x)=5x-7(20-x)
怎么解
付世英回答:
去括号:8y-8+5y=3y+8y+14
8y+5y-8y-3y=14+8
2y=22
所以y=11
第二题无法解
4x-60+3x=5x-140+7x
4x+3x-7x-5x=-140+60
-5x=-80
5x=80
x=16
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