Question

add 6-3+b+a-7-6ab+3b+2-a​

Answer 1

-6ab+4b-2

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Answer 2

Answer:

first we should group the terms

a-a+b+3b-6ab+6-3-7+2

a-a=0

b+3b=4b

6+8-3-7=14-10=4

0+4b-6ab+4

answer

4b-6ab+4

2(2b-3ab+2)