3(0,4х+7)-4(0,8х-3)=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
1.2x+21-3.2x+12=2
2x=-31
x=-15.5
3(0,4х+7)-4(0,8х-3)=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
1.2x+21-3.2x+12=2
2x=-31
x=-15.5