20-8b=-20-18b

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Solution for 20-8b=-20-18b equation: 



20-8b=-20-18b

We move all terms to the left:

20-8b-(-20-18b)=0

We add all the numbers together, and all the variables

-8b-(-18b-20)+20=0

We get rid of parentheses

-8b+18b+20+20=0

We add all the numbers together, and all the variables

10b+40=0

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

10b=-40

b=-40/10

b=-4

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