1.

From the sum of 3x-y+11 and -y-11, subtract 3x-y+11

Answer»

Answer:

3x-y+11+(-y-11)

3x-y-y+11-11=3x-2y

3x-2y-(3x-y+11)

3x-2y-3x+y-11

-y-11



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