8*(0,7x-4)-2*(0,2x-3)=-39

Question

8*(0,7x-4)-2*(0,2x-3)=-39

Answer 1

8*(0,7x-4)-2*(0,2x-3)=-39
5,6x - 32 - 0,4x + 6 = - 39
5,2x = -39+32-6
5,2x = - 13

x = - 2,5

Ответ6 - 2,5

 

 

Answer 2

8*(0,7х-4)-2*(0,2х-3)=-39

5,6х-32-0,4х+6=-39

5,2х-26=-39

5,2х=-39+26

5,2х=-13

х=-2,5