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6X - 8 = 4X + 10
6X - 4X = 10+8
2X = 18
X = 18 : 2
X = 6
gini bukan sih ? aku rada lupa
3/2x = 12+ 6
3/2 x = 18
3x = 18 x 2
3x = 36
x = 12
12) 8 - 2/3 x = 4
-2/3 x = 4- 8
- 2/3x = -4 ( kedua ruas dikali negatif)
2/3x = 4
2x = 4 x 3
x = 12 :2
x = 6
13) 2 ( 3x -4 ) = 4x + 10
6x - 8 = 4x + 10
6x - 4x = 10 - 6
2x = 4
x = 2