7+0.80b=0.9b

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Solution for 7+0.80b=0.9b equation: 



7+0.80b=0.9b

We move all terms to the left:

7+0.80b-(0.9b)=0

We add all the numbers together, and all the variables

0.80b-(+0.9b)+7=0

We get rid of parentheses

0.80b-0.9b+7=0

We add all the numbers together, and all the variables

-0.1b+7=0

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

-0.1b=-7

b=-7/-0.1

b=+70

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