250=4r+4(r+20)

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Solution for 250=4r+4(r+20) equation: 



250=4r+4(r+20)

We move all terms to the left:

250-(4r+4(r+20))=0



We calculate terms in parentheses: -(4r+4(r+20)), so:

4r+4(r+20)

We multiply parentheses

4r+4r+80

We add all the numbers together, and all the variables

8r+80

Back to the equation:

-(8r+80)



We get rid of parentheses

-8r-80+250=0

We add all the numbers together, and all the variables

-8r+170=0

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

-8r=-170

r=-170/-8

r=21+1/4

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