2b+21=157

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Solution for 2b+21=157 equation: 



2b+21=157

We move all terms to the left:

2b+21-(157)=0

We add all the numbers together, and all the variables

2b-136=0

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

2b=136

b=136/2

b=68

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