-2b+4b=4

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Solution for -2b+4b=4 equation: 



-2b+4b=4

We move all terms to the left:

-2b+4b-(4)=0

We add all the numbers together, and all the variables

2b-4=0

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

2b=4

b=4/2

b=2

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