b+10=20-b

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Solution for b+10=20-b equation: 



b+10=20-b

We move all terms to the left:

b+10-(20-b)=0

We add all the numbers together, and all the variables

b-(-1b+20)+10=0

We get rid of parentheses

b+1b-20+10=0

We add all the numbers together, and all the variables

2b-10=0

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

2b=10

b=10/2

b=5

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