Question

9,5х-(3,2х+1,8х)+3,75=6,9

Answer 1

1)3.2х+1.8х=5х

2)9.5х-5х=4.5х

4.5х+3.75=6.9

4.5х=6.9-3.75

4.5х=3.15

х=3.15:4.5

х=0.7