49=-8b+-31

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Solution for 49=-8b+-31 equation: 



49=-8b+-31

We move all terms to the left:

49-(-8b+-31)=0

We add all the numbers together, and all the variables

-(-8b-31)+49=0

We get rid of parentheses

8b+31+49=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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