Question

125％X-X=28 (1+40％)X=98 1-20％X=4分之1 1+20％X=1又4分之1 这几个方程怎么解啊

Answer 1

125％X-X=28

0.25x=28

x=112

(1+40％)X=98

1.4x=98

x=70

1-20％X=4分之1

4/5x=1/4

x=5/16

1+20％X=1又4分之1

6/5x=5/4

x=25/24