2r-10=4(r+5)

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



2r-10=4(r+5)

We move all terms to the left:

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



We calculate terms in parentheses: -(4(r+5)), so:

4(r+5)

We multiply parentheses

4r+20

Back to the equation:

-(4r+20)



We get rid of parentheses

2r-4r-20-10=0

We add all the numbers together, and all the variables

-2r-30=0

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

-2r=30

r=30/-2

r=-15

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