2x + 6z - 3y + 7z – 8x + 2y + 7x.
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Answer:
x-y+13z
Step-by-step explanation:
2x+6z-3y+7z-8x+2y+7x
= 2x-8x+7x-3y+2y+6z+7z
= x-y+13z
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