9xy+3yz-5zx,4yz+9zx-5y-5xz+2x-5xy
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Answer:
4xy+7yz-zx+2x-5y
Step-by-step explanation:
9xy+3yz-5zx+4yz+9zx-5y-5xz+2x-5xy
grouping the like terms,
=(9xy-5xy) + (3yz +4yz ) + (-5zx +9zx-5xz)+(2x) + (-5y)
=4xy + 7yz + (-zx) + 2x -5y
=4xy+7yz-zx+2x-5y
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