5(x-3)÷2=7.)

问题描述:

5(x-3)÷2=7.)

15除以5=3 3+3=9

5x-15=15
5x=30
x=6

(x-3)÷2=7.5
x-3 =7.5*2
x-3+3 =15+3
x=18

5(x-3)÷2=7.5
x-3=3
x=6

5(x-3)÷2=7.5
2.5(x-3)=75.
x-3=3
x=6

5(x-3)÷2=7.5
5(x-3)=7.5*2
5(x-3)=15
x-3=3
x=6

5(x-3)÷2=7.5
(x-3)=7.5* 2
x-3=7.5* 2÷5
x=7.5* 2÷5+3
x=6