3y/7:(4y-10)=(0.9*4x):(1.2*3x)怎么算
1个回答
10.8xy/7=14.4xy-36x
90xy/7=36x
又因为x≠0
90y/7=36
y=14/5
x无法计算,按照楼主给的题,x已经可以约掉了
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