80=5/9(90)+b

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Solution for 80=5/9(90)+b equation: 



80=5/9(90)+b

We move all terms to the left:

80-(5/9(90)+b)=0



Domain of the equation: 990+b)!=0

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

b)!=-990

b!=-990/1

b!=-990

b∈R



We add all the numbers together, and all the variables

-(+b+5/990)+80=0

We get rid of parentheses

-b+80-5/990=0

We multiply all the terms by the denominator


-b*990-5+80*990=0

We add all the numbers together, and all the variables

-b*990+79195=0

Wy multiply elements

-990b+79195=0

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

-990b=-79195

b=-79195/-990

b=79+197/198

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