Answer:
5x-y-4
Explanation:
Combine like terms.
2x+3x=5x
5y+-6y=-y
3+-7=-4
Rewrite it.
(2x + 5y + 3) + (3x - 6y - 7)
2x + 3x +5y -6y +3 -7
5x -y -4
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