5x-1.72x=6.56 解方程
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5x-1.72x=6.56 解方程
5x-1.72x=6.56 解方程
5x-1.72x=6.56 解方程
5x-1.72x=6.56
3.28x=6.56
x=6.56/3.28
x=2
3.28X=6.56
x=6.56/3.28
x=2
5x-1.72x=6.56
3.28x=6.56
x=6.56/3.28
x=2
(5-1.72)x=6.56
3.28x=6.56
x=2