数学
x-15+(100-x)x2=150 解方程,

2019-05-28

x-15+(100-x)x2=150 解方程,
优质解答
x-15+(100-x)*2=150
x-15+200-2x=150
185-x=150
x=35
x-15+(100-x)*2=150
x-15+200-2x=150
185-x=150
x=35
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