(5x-1200)/(4x-1000)=13/10
问题描述:
(5x-1200)/(4x-1000)=13/10
答
了吧乘10(4x-1000)
10(5x-1200)=13(4x-1000)
50x-12000=52x-13000
52x-50x=13000-12000
2x=1000
x=1000÷2
x=500
答
500
答
(5x-1200)*10=(4x-1000)*13
50x-12000=52x-13000
2x=1000
x=500