100+2b+40=180

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Solution for 100+2b+40=180 equation: 



100+2b+40=180

We move all terms to the left:

100+2b+40-(180)=0

We add all the numbers together, and all the variables

2b-40=0

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

2b=40

b=40/2

b=20

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