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

Question

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

Answer 1

3(0,4x+7)-4(0,8x-3)=2
1,2x+21-3,2x+12=2
-2x+33=2
-2x=2-33
-2x=-31
x=15,5
Ответ:15,5

Answer 2

3(0,4x +7 ) - 4 (0,8x-3)=2
1,2х+21 -(3,2х-12) = 2
1,2х+21 -3,2х+12 = 2
1,2х-3,2х = 2-21-12
-2х=-31
х=-31:(-2)
х=15,5
Ответ: 15,5