6-7+8b=31

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Solution for 6-7+8b=31 equation: 



6-7+8b=31

We move all terms to the left:

6-7+8b-(31)=0

We add all the numbers together, and all the variables

8b-32=0

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

8b=32

b=32/8

b=4

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