х+3+2(х+3)= -(3-х)+4
х+3 +2х +6 = -3 +х +4
3х+9 = х +1
3х -х= 1-9
2х = -8
х = -4
2- 3(2х+2) = 5-4х
2-6х -6 = 5-4х
-4-6х = 5-4х
-6х +4х = 5+4
-2х =9
х = - 4,5
x + 3 + 2x + 6 = -3 + x + 4
Иксы в одну сторону, числа в другую:
x + 2x - x = -3 + 4 - 3 - 6
2x = -8
x = -4
2. Аналогично:
2 - 6x - 6 = 5 - 4x
-6x + 4x = 5 - 2 + 6
-2x = 9
x = -4.5
х+3+2(х+3)= -(3-х)+4
х+3 +2х +6 = -3 +х +4
3х+9 = х +1
3х -х= 1-9
2х = -8
х = -4
2- 3(2х+2) = 5-4х
2-6х -6 = 5-4х
-4-6х = 5-4х
-6х +4х = 5+4
-2х =9
х = - 4,5