x+25%x=3.75 x:7/8=3/5:3/4

问题描述:

x+25%x=3.75 x:7/8=3/5:3/4

x+25%x=3.75
1.25x=37.5
x=3
x:7/8=3/5:3/4
3/4 x=3/5 × 7/8
3/4 x= 21/40
x=0.7