(x+1.2)x5除以2=7.5

问题描述:

(x+1.2)x5除以2=7.5

1.8

(x+1.2) * 5=15
x+1.2=3
x=1.8

.
(x+1.2)x5=15
x+1.2=3
x=1.8

x=1.8