20b-90=40b+30

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Solution for 20b-90=40b+30 equation: 



20b-90=40b+30

We move all terms to the left:

20b-90-(40b+30)=0

We get rid of parentheses

20b-40b-30-90=0

We add all the numbers together, and all the variables

-20b-120=0

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

-20b=120

b=120/-20

b=-6

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