Tentukan penyelesaian dari persamaan

1a.
4(x + 1) - 2x = 12
4x + 4 - 2x = 12
2x + 4 = 12
2x = 12 - 4
2x = 8
x = 8 ÷ 2
x = 4

1b.
3x + 4(x - 2) = 6x - 1 + 8(2x + 3)
3x + 4x - 8 = 6x - 1 + 16x + 24
7x - 8 = 22x + 23
7x - 22x = 23 + 8
-15x = 31
x = 31 ÷ (-15)
x = [tex]\bold{-2 \frac{1}{15}} [/tex]

1.
a. 4x + 4 - 2x = 12
2x = 8
x = 2

b. 3x + 4x - 8 = 6x - 1 + 16x + 24
3x + 4x - 6x - 16x = (-1) + 24 + 8
-15x = 31
x = -31/15
x = -2 1/15