5(8-2r)=-2(10-5r)

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Solution for 5(8-2r)=-2(10-5r) equation: 



5(8-2r)=-2(10-5r)

We move all terms to the left:

5(8-2r)-(-2(10-5r))=0

We add all the numbers together, and all the variables

5(-2r+8)-(-2(-5r+10))=0

We multiply parentheses

-10r-(-2(-5r+10))+40=0



We calculate terms in parentheses: -(-2(-5r+10)), so:

-2(-5r+10)

We multiply parentheses

10r-20

Back to the equation:

-(10r-20)



We get rid of parentheses

-10r-10r+20+40=0

We add all the numbers together, and all the variables

-20r+60=0

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

-20r=-60

r=-60/-20

r=+3

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