Add 7 xy+5yz -3zx,4yz+ 9zx-4y,-3zx+5y-2xy
Answer;
=(7xy+5yz−3zx)+(4yz+9zx−4y)+(−3xz+5x−2y)
=7xy+5yz−3zx+4yz+4zx−4y−3xz+5x−2y
=7xy+9yz+3zx+5x−6y
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Step-by-step explanation:
Add 7 xy+5yz -3zx,4yz+ 9zx-4y,-3zx+5y-2xy
Answer;
=(7xy+5yz−3zx)+(4yz+9zx−4y)+(−3xz+5x−2y)
=7xy+5yz−3zx+4yz+4zx−4y−3xz+5x−2y
=7xy+9yz+3zx+5x−6y
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