8b+7b=4-6b

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Solution for 8b+7b=4-6b equation: 



8b+7b=4-6b

We move all terms to the left:

8b+7b-(4-6b)=0

We add all the numbers together, and all the variables

8b+7b-(-6b+4)=0

We add all the numbers together, and all the variables

15b-(-6b+4)=0

We get rid of parentheses

15b+6b-4=0

We add all the numbers together, and all the variables

21b-4=0

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

21b=4

b=4/21

b=4/21

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