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8(x - 4) = 5(x - 3)
8x - 32 = 5x - 15
3x = 17
x = 17/3
13.
kalikan semuanya dengan 30 (KPK 6 dan 5)
shg jadi 5(2x - 10) = 18x - 270
10x - 50 = 18x - 270
-8x = -220
x = 22/8
14.
8x - 6 3x + 10
5x 16
x 16/5
15.
kalikan dengan 20 (KPK 2, 4, 5)
jadi bentuk 4(x+3) - 5(2x-3) 10
4x + 12 - 10x + 15 10
-6x -17
x 17/6