X-(12.5%X+12.5%X+16)=48.5这个方程怎么解?（过程要清楚）
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X-(12.5%X+12.5%X+16)=48.5这个方程怎么解?（过程要清楚）X-(12.5%X+12.5%X+16)=48.5这个方程怎么解?（过程要清楚）X-(12.5%X+12.5%X+16)
X-(12.5%X+12.5%X+16)=48.5这个方程怎么解?（过程要清楚）
X-(12.5%X+12.5%X+16)=48.5这个方程怎么解?（过程要清楚）
X-(12.5%X+12.5%X+16)=48.5这个方程怎么解?（过程要清楚）
X-(12.5%X+12.5%X+16)=48.5
x-(25%x+16)=48.5
x-25%x-16=48.5
(1-25%)x=48.5+16
75%x=64.5
x=64.5÷75%
x=86
X-(12.5%X+12.5%X+16)=48.5
X-(0.125X+0.125X+16)=48.5
X-(0.25X+16)=48.5
X-0.25X-16=48.5
0.75X-16=48.5
0.75X=48.5+16
0.75X=64.5
X=64.5/0.75
X=86