4-2b=7

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Solution for 4-2b=7 equation: 



4-2b=7

We move all terms to the left:

4-2b-(7)=0

We add all the numbers together, and all the variables

-2b-3=0

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

-2b=3

b=3/-2

b=-1+1/2

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