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3x+2 : 4x+2 = 7 : 9
3x+2 = 7
4x+2 9
9(3x+2) = 7(4x+2)
27x+18 = 28x+14
18-14 = 28x-27x
4 = x
3x : 4x
3(4) : 4(4)
12 : 16
hasil kali => 12 x 16 = 192