3b+5b=80

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Solution for 3b+5b=80 equation: 



3b+5b=80

We move all terms to the left:

3b+5b-(80)=0

We add all the numbers together, and all the variables

8b-80=0

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

8b=80

b=80/8

b=10

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