4b+5=b-7

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Solution for 4b+5=b-7 equation: 



4b+5=b-7

We move all terms to the left:

4b+5-(b-7)=0

We get rid of parentheses

4b-b+7+5=0

We add all the numbers together, and all the variables

3b+12=0

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

3b=-12

b=-12/3

b=-4

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