85=-9b+4

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Solution for 85=-9b+4 equation: 



85=-9b+4

We move all terms to the left:

85-(-9b+4)=0

We get rid of parentheses

9b-4+85=0

We add all the numbers together, and all the variables

9b+81=0

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

9b=-81

b=-81/9

b=-9

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