S(x)=(86.4-5x)-(140-12.2)

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Solution for S(x)=(86.4-5x)-(140-12.2) equation: 



(S)=(86.4-5S)-(140-12.2)

We move all terms to the left:

(S)-((86.4-5S)-(140-12.2))=0

We add all the numbers together, and all the variables

S-((-5S+86.4)-(127.8))=0



We calculate terms in parentheses: -((-5S+86.4)-(127.8)), so:

(-5S+86.4)-(127.8)

We add all the numbers together, and all the variables

(-5S+86.4)-127.8

We get rid of parentheses

-5S+86.4-127.8

We add all the numbers together, and all the variables

-5S-41.4

Back to the equation:

-(-5S-41.4)



We get rid of parentheses

S+5S+41.4=0

We add all the numbers together, and all the variables

6S+41.4=0

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

6S=-41.4

S=-41.4/6

S=-6+3.85714285714/4.28571428571

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