(x-45)/(x-24)=62.5%,怎么算

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(x-45)/(x-24)=62.5%,怎么算
(x-45)/(x-24)=62.5%,怎么算

(x-45)/(x-24)=62.5%,怎么算
两边乘以x-24
x-45=0.625(x-24)
x-45=0.625x-15
x-0.625x=45-15
0.375x=30
x=30÷0.375
x=80

X-45=0.625X-15
0.375X=30
X=80

擦,题目看错,无视。。

(X-45)/(X-24)=62.5%
(X-45)/(X-24)=5/8
(X-45)×8 =(X-24)×5
8X -360 =5X -120
3X =240
X=80

去分母,去括号,得x=80

(x-45)*100=(x-24)*62.5
625x-15000=1000x-45000
375x=30000
x=80