tolong tulis caranya...penting

3x -4 = 2x + 7
3x - 2x = 7 + 4
x = 11

2x - 3 =
2 (11) - 3
22-3 = 19

26. 3x + 9 = x-1
3x-x = -1 -9
2x = -10
x = -10/2 = -5
27. 3x-4 = 2x +7
3x - 2x = 7 + 4
x = 11
Jadi, 2x-3 = 2 (11) - 3 = 19
28. 2 (3x+ 1/4) = 5(2x-1/6)
6x + 1/2 = 10 x -5/6
6x-10x = -5/6 -1/2
-4x = -4/3
x = 16/3
(Bingung sih yg nomer 28.. udah kucakar brkali2 ttep ajabdapetnya kya gini)