add = x-3y +4z, y-2x-8z., 5x-2y -3z,5x-2y-3z
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Answer:
9x-6y-7z
Step-by-step explanation:
arrange in order
(x-2x+5x+5x) +(-3y+y-2y-2y) +(4z-8z-3z)
=9x-6y-7z
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