2b-4=8-b

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Solution for 2b-4=8-b equation: 



2b-4=8-b

We move all terms to the left:

2b-4-(8-b)=0

We add all the numbers together, and all the variables

2b-(-1b+8)-4=0

We get rid of parentheses

2b+1b-8-4=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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