add 7x²+6x+7 and 8x+7y+4
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Answer:
7x²+ 14x + 7y + 11
Step-by-step explanation:
(7x²+6x +7) + (8x+7y+4)
7x² + 6x + 7 + 8x + 7y + 4
7x² + 6x + 8x + 7y + 4 + 7
7x² + 14x + 7y + 11
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