20+7b=55

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Solution for 20+7b=55 equation: 



20+7b=55

We move all terms to the left:

20+7b-(55)=0

We add all the numbers together, and all the variables

7b-35=0

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

7b=35

b=35/7

b=5

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