6.3=2.1(r-3)

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Solution for 6.3=2.1(r-3) equation: 



6.3=2.1(r-3)

We move all terms to the left:

6.3-(2.1(r-3))=0



We calculate terms in parentheses: -(2.1(r-3)), so:

2.1(r-3)

We multiply parentheses

2.1r-6.3

Back to the equation:

-(2.1r-6.3)



We get rid of parentheses

-2.1r+6.3+6.3=0

We add all the numbers together, and all the variables

-2.1r+12.6=0

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

-2.1r=-12.6

r=-12.6/-2.1

r=6+-1.7763568394003E-15/2.1

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