8b+9=-7-8b

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Solution for 8b+9=-7-8b equation: 



8b+9=-7-8b

We move all terms to the left:

8b+9-(-7-8b)=0

We add all the numbers together, and all the variables

8b-(-8b-7)+9=0

We get rid of parentheses

8b+8b+7+9=0

We add all the numbers together, and all the variables

16b+16=0

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

16b=-16

b=-16/16

b=-1

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