40=-2-7b

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Solution for 40=-2-7b equation: 



40=-2-7b

We move all terms to the left:

40-(-2-7b)=0

We add all the numbers together, and all the variables

-(-7b-2)+40=0

We get rid of parentheses

7b+2+40=0

We add all the numbers together, and all the variables

7b+42=0

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

7b=-42

b=-42/7

b=-6

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