subtract the sum of 9x-4y+5 and -6-5y+7x from -5xx-6y-11
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Step-by-step explanation:
-5xx-6y-11-9x-4y+5-(-6-5y-7x)
-5xx-6y-11-9x-4y+5+6-5y-7x
-21x^2 + y7
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