2(r-3)=4(r-19)

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Solution for 2(r-3)=4(r-19) equation: 



2(r-3)=4(r-19)

We move all terms to the left:

2(r-3)-(4(r-19))=0

We multiply parentheses

2r-(4(r-19))-6=0



We calculate terms in parentheses: -(4(r-19)), so:

4(r-19)

We multiply parentheses

4r-76

Back to the equation:

-(4r-76)



We get rid of parentheses

2r-4r+76-6=0

We add all the numbers together, and all the variables

-2r+70=0

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

-2r=-70

r=-70/-2

r=+35

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