Question

find the sum of 3x-y+11 and -y-11

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Answer 1

Step-by-step explanation:

3x-y+11 + -y-11

= 3x-2y

Answer 2

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$= (3x - y + 11) + ( - y - 11) \\ \\ = 3x - y + 11 - y - 11 \\ \\ = 3x - y - y + 11 - 11 \\ \\ = 3x - 2y$