1/5(48-X)=1/4X

问题描述:

1/5(48-X)=1/4X

1/5(48-X)=1/4X
解: 48/5- x/5 =1/4X
4x乘以48-4x乘以5 = 5
192x -20x = 5
172x = 5
x = 5/172

楼主.相信我哦..

4*(48-x)=5x
178=9x
x=63/3

两外项的乘积等于两内项的乘积 分母不能为0
5(48-X)=4X
48-x不等于0
4x不等于0