Решение задания смотри на фотографии
1) 2х-14х+9х = 14+19
-3х = 33 |: (-3)
х= -11
2) 6х + 5х +х = 4-10+8+7
12х = 9
х = 9/12
x = 3/4 = 0.75
3) -х - 5х + 8х +2х = 2 - 9 + 7
4х = 0
х = 0
4) -4х - 2х +х = -5-18-7
-5х = -30
х = 6
5) -7х +2 х - 3х = 2+8+5-3
-8х = 12
4х = -6
2x= -3
x = -3/2 = -1.5
(4,2х-0,96)*1,5=1,71
6,3х-1,44=1,71
6,3х= 1,71+1,44
6,3х= 3,15
х= 3,15: 6,3
х= 0,5