40b-13-17b=18b+42

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Solution for 40b-13-17b=18b+42 equation: 



40b-13-17b=18b+42

We move all terms to the left:

40b-13-17b-(18b+42)=0

We add all the numbers together, and all the variables

23b-(18b+42)-13=0

We get rid of parentheses

23b-18b-42-13=0

We add all the numbers together, and all the variables

5b-55=0

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

5b=55

b=55/5

b=11

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