Question

1,6(25-4,5х)-3(2,6х-12)=6-5х

Answer 1

1,6(25-4,5х)-3(2,6х-12)=6-5х
40-7,2х-7,8х+36=6-5х
-7,2х-7,8х+5х=6-40-36
-15х+5х=6-76
-10х=-70
х=-70:(-10)
х=7