7.8r-7(-2.9r+16.85)=-6(-5.4r+14.57)

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Solution for 7.8r-7(-2.9r+16.85)=-6(-5.4r+14.57) equation: 



7.8r-7(-2.9r+16.85)=-6(-5.4r+14.57)

We move all terms to the left:

7.8r-7(-2.9r+16.85)-(-6(-5.4r+14.57))=0

We multiply parentheses

7.8r+14r-(-6(-5.4r+14.57))-117.95=0



We calculate terms in parentheses: -(-6(-5.4r+14.57)), so:

-6(-5.4r+14.57)

We multiply parentheses

30r-87.42

Back to the equation:

-(30r-87.42)



We add all the numbers together, and all the variables

21.8r-(30r-87.42)-117.95=0

We get rid of parentheses

21.8r-30r+87.42-117.95=0

We add all the numbers together, and all the variables

-8.2r-30.53=0

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

-8.2r=30.53

r=30.53/-8.2

r=-3+3.0725388601036/4.2487046632124

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