S=50-(0.9d)

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Solution for S=50-(0.9d) equation: 



=50-(0.9S)

We move all terms to the left:

-(50-(0.9S))=0

We add all the numbers together, and all the variables

-(50-(+0.9S))=0



We calculate terms in parentheses: -(50-(+0.9S)), so:

50-(+0.9S)

determiningTheFunctionDomain
-(+0.9S)+50

We get rid of parentheses

-0.9S+50

Back to the equation:

-(-0.9S+50)



We get rid of parentheses

0.9S-50=0

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

0.9S=50

S=50/0.9

S=55+0.5/0.9

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