tolong jawab yaa kaka kaka makasih

1.) a. x + 4 = 12
x = 12 - 4 = 8

b. 2x - 9 = 13
2x = 13 + 9
2x = 22
x = 22/2 = 11

c. 10x - x = 14
9x = 14
x = 14/9

d. 10 - 2x = 20
-2x = 20 - 10
-2x = 10
x = 10/-2 = -5

e. 3x - 10 = x + 8
3x - x = 8 + 10
2x = 18
x = 18/2 = 9

2.) a. x + 2 < 4, x E B
x < 4 - 2
x < 2

b. 2x - 5 > 7, x E B
2x > 7 + 5
2x > 12
x > 12/2
x > 6

c. 10 - x > 4, x E B
-x > 4 - 10
-x > -6
x < 6

d. 3x - 2 > x + 6, x E B
3x - x > 6 + 2
2x > 8
x > 8/2
x > 4

semoga membantu:)