(7a+3)-(-a-5)=-16

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Solution for (7a+3)-(-a-5)=-16 equation: 



(7a+3)-(-a-5)=-16

We move all terms to the left:

(7a+3)-(-a-5)-(-16)=0

We add all the numbers together, and all the variables

(7a+3)-(-1a-5)-(-16)=0

We add all the numbers together, and all the variables

(7a+3)-(-1a-5)+16=0

We get rid of parentheses

7a+1a+3+5+16=0

We add all the numbers together, and all the variables

8a+24=0

We move all terms containing a to the left, all other terms to the right

8a=-24

a=-24/8

a=-3

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