7=3-4b

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Solution for 7=3-4b equation: 



7=3-4b

We move all terms to the left:

7-(3-4b)=0

We add all the numbers together, and all the variables

-(-4b+3)+7=0

We get rid of parentheses

4b-3+7=0

We add all the numbers together, and all the variables

4b+4=0

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

4b=-4

b=-4/4

b=-1

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