15-7x-9x-28+14x-17=21-3x+13-9x+8x
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Answer:
x=32
15-7x-9x-28+14x=21-3x+13-9x+x
-16x+14x-45+15=-12x+8x+34
-2x-30=-4x=34+30
2x=64
x=64÷2
x=32
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