Question

7x + 11y + x – 6y +7 –y + 8x + 6y -7x

Answer 1

23x+10y+7

Step-by-step explanation:

$7x + 11y + x - 6y + 7 - y + 8x + 6y - 7x \\ 7x + x + 8x + 7x + 11y - 6y - y + 6y + 7 \\ 23x + 10y + 7$

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