-135.5=-2.9x+4.5(-6.9+4.2x)

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Solution for -135.5=-2.9x+4.5(-6.9+4.2x) equation: 



-135.5=-2.9x+4.5(-6.9+4.2x)

We move all terms to the left:

-135.5-(-2.9x+4.5(-6.9+4.2x))=0

We add all the numbers together, and all the variables

-(-2.9x+4.5(4.2x-6.9))-135.5=0



We calculate terms in parentheses: -(-2.9x+4.5(4.2x-6.9)), so:

-2.9x+4.5(4.2x-6.9)

We multiply parentheses

-2.9x+18x-31.05

We add all the numbers together, and all the variables

15.1x-31.05

Back to the equation:

-(15.1x-31.05)



We get rid of parentheses

-15.1x+31.05-135.5=0

We add all the numbers together, and all the variables

-15.1x-104.45=0

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

-15.1x=104.45

x=104.45/-15.1

x=-6+7.4864864864865/8.1621621621621

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