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3x = 18 - 6
3x = 12
x = 12/3
x = 4
jawabannya a.4
2. 2x + 3 = 3x +7
2x - 3x = 7 - 3
- x. = 4
x. = -4
jawabannya b. - 4
3x = 18 - 6
3x = 12
x = 4 ( a )
2x + 3 = 3x + 7
2x - 3x = 7 - 3
-x = 4
x = -4 ( b )