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Question
Subtract the second expression from the first.
(4xy − 9z); (3xy − 16z)
Solution
(4xy − 9z) − (3xy − 16z)
= 4xy − 9z − 3xy + 16z
= (4xy − 3xy) = xy
= −9z + 16z = 7z
= xy + 7z
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