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4x - x = 13 + 5
3x = 18
x = 18 : 3
x = 6
jadi, x + 2
6 + 2 = 8
penyelesaian:
4x - 5 = x + 13
4x - x = 13 + 5
3x = 18
x = 6
selesaikan, masukkan nilai x itu = 6 ke pers. x + 2.
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