Answer:
-xy+x-10y+4
Explanation:
x - 10y - xy + 4
(6xy+4x−8y)−(3x+2y+7xy−4)
= 6xy+4x−8y−3x-2y-7xy+4
= 6xy-7xy+4x−3x−8y-2y+4
= x - 10y - xy + 4
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