3r-5=4(2r-10)

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Solution for 3r-5=4(2r-10) equation: 



3r-5=4(2r-10)

We move all terms to the left:

3r-5-(4(2r-10))=0



We calculate terms in parentheses: -(4(2r-10)), so:

4(2r-10)

We multiply parentheses

8r-40

Back to the equation:

-(8r-40)



We get rid of parentheses

3r-8r+40-5=0

We add all the numbers together, and all the variables

-5r+35=0

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

-5r=-35

r=-35/-5

r=+7

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