-57=4(6-4r)-(1+4r)

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Solution for -57=4(6-4r)-(1+4r) equation: 



-57=4(6-4r)-(1+4r)

We move all terms to the left:

-57-(4(6-4r)-(1+4r))=0

We add all the numbers together, and all the variables

-(4(-4r+6)-(4r+1))-57=0



We calculate terms in parentheses: -(4(-4r+6)-(4r+1)), so:

4(-4r+6)-(4r+1)

We multiply parentheses

-16r-(4r+1)+24

We get rid of parentheses

-16r-4r-1+24

We add all the numbers together, and all the variables

-20r+23

Back to the equation:

-(-20r+23)



We get rid of parentheses

20r-23-57=0

We add all the numbers together, and all the variables

20r-80=0

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

20r=80

r=80/20

r=4

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