What is the sum of 7xy + 5yx - 3xz & 2xy + 4yz + 2xz?
(a) 8xy + yz - xz (b) 9xy +9yz - xz
(c) 9xy +9yz + xz (d) 9xy +9yz + 5xz
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Step-by-step explanation:
option (b) is correct 9xy+9yz-xz
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