7=5-2b

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Solution for 7=5-2b equation: 



7=5-2b

We move all terms to the left:

7-(5-2b)=0

We add all the numbers together, and all the variables

-(-2b+5)+7=0

We get rid of parentheses

2b-5+7=0

We add all the numbers together, and all the variables

2b+2=0

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

2b=-2

b=-2/2

b=-1

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