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

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



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

We move all terms to the left:

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



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

15.5+(-3.6x)+1.8x

determiningTheFunctionDomain
(-3.6x)+1.8x+15.5

We add all the numbers together, and all the variables

1.8x+(-3.6x)+15.5

We get rid of parentheses

1.8x-3.6x+15.5

We add all the numbers together, and all the variables

-1.8x+15.5

Back to the equation:

-(-1.8x+15.5)



We get rid of parentheses

1.8x-15.5+20.5=0

We add all the numbers together, and all the variables

1.8x+5=0

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

1.8x=-5

x=-5/1.8

x=-2+1/1.28571428571

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