15=(0.80+x)/(1+.12)

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Solution for 15=(0.80+x)/(1+.12) equation: 



15=(0.80+x)/(1+.12)

We move all terms to the left:

15-((0.80+x)/(1+.12))=0

We add all the numbers together, and all the variables

-((x+0.8)/(1.12))+15=0

We multiply all the terms by the denominator


-((x+0.8)+15*(1.12))=0



We calculate terms in parentheses: -((x+0.8)+15*(1.12)), so:

(x+0.8)+15*(1.12)

We add all the numbers together, and all the variables

(x+0.8)+16.8

We get rid of parentheses

x+0.8+16.8

We add all the numbers together, and all the variables

x+17.6

Back to the equation:

-(x+17.6)



We get rid of parentheses

-x-17.6=0

We add all the numbers together, and all the variables

-1x-17.6=0

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

-x=17.6

x=17.6/-1

x=-17+0.6/1

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