方程8/9-x+5/12=1/2怎么解
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方程8/9-x+5/12=1/2怎么解
方程8/9-x+5/12=1/2怎么解
方程8/9-x+5/12=1/2怎么解
8/9-x+5/12=1/2
32/36-x+15/36=18/36
x=(32+15-18)/36
x=29/36
8/(9-x)+5/12=1/2
分母都*(9-x)*12
=>96+5*(9-x)=6*(9-x)
=>x=87