8. The sum of 2a+ 9a-6xy & - 7a-2xy is =
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Answer:
2a+9a-6xy + (-7a-2xy) = 4(a-2xy)
Step-by-step explanation:
Given
2a+9a-6xy
-7a-2xy
To add them,
2a+9a-6xy+ (-7a-2xy)
= 2a+9a-6xy-7a-2xy
= 2a+9a-7a-6xy-2xy
= 11a-7a-8xy
= 4a-8xy
=4(a-2xy)
So the answer is 4(a-2xy)
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