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6x + 10 - 21x + 9 = x - 29
6x - 21x - x = -29 - 10 - 9
-16x = -48
x = -48/-16
x = 3
6x +10 - 21x +9 = x -29
-15x + 19 = x - 29
19 + 29 = x + 15x
48 = 16x
3 = x
Himpunan penyelesaian untuk 2(3x+5) -3(7x-3) = x-29 adalah {3}