20.5=-15.5+(-3.6)+1.8x

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Solution for 20.5=-15.5+(-3.6)+1.8x equation: 



20.5=-15.5+(-3.6)+1.8x

We move all terms to the left:

20.5-(-15.5+(-3.6)+1.8x)=0



We calculate terms in parentheses: -(-15.5+(-3.6)+1.8x), so:

-15.5+(-3.6)+1.8x

determiningTheFunctionDomain
1.8x-15.5+(-3.6)

We add all the numbers together, and all the variables

1.8x-19.1

Back to the equation:

-(1.8x-19.1)



We get rid of parentheses

-1.8x+19.1+20.5=0

We add all the numbers together, and all the variables

-1.8x+39.6=0

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

-1.8x=-39.6

x=-39.6/-1.8

x=+22

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