3(2 1/2х - 0,2)-15 1/15=6-(2/3-0,5х).

Question

3(2 1/2х - 0,2)-15 1/15=6-(2/3-0,5х).

Answer 1

3(2 1//2x-0,2)-15 1//15=6-(2//3-0,5x)
7.5x-0.6-15 1//15-6+2//3-0.5x=0

7.5x-47//3-6+2//3-0.5x=0

7.5x-21-0.5x=0

7x-21=0

x=21/7

x=3

// - черта дроби