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29 = 2x + 5
24 = 2x
12 cm = x
87 = 3 × ( 2x + 5 )
87 = 6x + 15
87 - 15 = 6x
72 = 6x
72 ÷ 6 = x
12 = x
nilai x adalah 12
ma'af kalau ada yg sallah!!!!!