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-4x + 8x = 1 + 15
4x = 16
x = 4
2. kurang tau
-4x + 8x = 1 + 15
4x = 16 jadi x = 16/4 = 4
2. 6/a + 2 = 4
2 = 4a/6
12 = 4a jdi a = 12/4 = 3