Question

6a-1+4a-7+(-2a-2) 16a-8+16a-8+8-16a

Answer 1

6a-1+4a-7+(-2a-2)= 6a-1+4a-7 -2a-2 =8а-10

 16a-8+16a-8+8-16a= 16a-8

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Answer 2

6a-1+4a-7+(-2a-2)=6a-1+4a-7-2a-2=8a-10                 16a-8+16a-8+8-16a=16a-8