Simplify:

(2xy + 4yz + 9) - (3yz - 3xy - 1)

xy + yz + 10

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-xy + yz

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-xy + yz + 10

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xy - yz + 10

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Solution

The correct option is A
xy + yz + 10

(2xy + 4yz + 9) - (3yz - 3xy - 1)

= 2xy + 4yz + 9 - 3yz + 3xy + 1

= (2xy + 3xy) + (4yz - 3yz) + (9 + 1)

= xy + yz + 10

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