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60 = 2(3x+2 + 2x-1)
60 = 2(3x+2) + 2(2x-1)
60 = 6x+4+4x-2
60 = 10x+2
58 = 10x
x = 5,8
(ini menurut saya)
60 = 2(3x+2+2x-1)
60 = 2(5x+1)
60 = 10x+2
58 = 10x
5,8 = x
maaf kalo salah