31+2b=61

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Solution for 31+2b=61 equation: 



31+2b=61

We move all terms to the left:

31+2b-(61)=0

We add all the numbers together, and all the variables

2b-30=0

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

2b=30

b=30/2

b=15

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