(b-8)/5=(b+7)/4

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Solution for (b-8)/5=(b+7)/4 equation: 



(b-8)/5=(b+7)/4

We move all terms to the left:

(b-8)/5-((b+7)/4)=0

We calculate fractions


b/()+(-((b+7)*5)/()=0



We calculate terms in parentheses: +(-((b+7)*5)/(), so:

-((b+7)*5)/(

We multiply all the terms by the denominator


-((b+7)*5)



We calculate terms in parentheses: -((b+7)*5), so:

(b+7)*5

We multiply parentheses

5b+35

Back to the equation:

-(5b+35)



We get rid of parentheses

-5b-35

Back to the equation:

+(-5b-35)



We get rid of parentheses

b/()-5b-35=0

We multiply all the terms by the denominator


b-5b*()-35*()=0

We add all the numbers together, and all the variables

b-5b*()=0

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