Question

решите уравнение
1)0,15х+6=51
2)7=6-0,2х
3)-0,7х+2=65

Answer 1

1) 0.15х+6=51
0.15х=51-6
0.15х=45
х=300
2) 7=6-0.2х
-6+0.2х=-7
0.2х=-7-6
0.2х=-13
х=-65
3) -0.7х+2=65
-0.7х=65-2
-0.7х=63
х=-90