2(x+2)-4(x-3)=5x+9
2х+4-4х+12=5х+9
-2х+16=5х+9
-7х=-7
х=1
ответ 1
2x+4-4x+12-5x-9 = 0
-7x -7 = 0
-7x = 7
x = -1
ответ: x = -1.
2(x+2)-4(x-3)=5x+9
2х+4-4х+12=5х+9
-2х+16=5х+9
-7х=-7
х=1
ответ 1
2x+4-4x+12-5x-9 = 0
-7x -7 = 0
-7x = 7
x = -1
ответ: x = -1.