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Answer:
9x-11y+7z
Step-by-step explanation:
5x-(4y-(7x-3z+2y+4z-3x-9y+6z))
5x-(4y-7x+3z-2y-4z+3x+9y-6z)
5x-4y+7x-3z+2y+4z-3x-9y+6z
9x-11y+7z
Answer:
ans is 9x - 11 y + 7 z oookokokoko