123=3(1-8r)

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Solution for 123=3(1-8r) equation: 



123=3(1-8r)

We move all terms to the left:

123-(3(1-8r))=0

We add all the numbers together, and all the variables

-(3(-8r+1))+123=0



We calculate terms in parentheses: -(3(-8r+1)), so:

3(-8r+1)

We multiply parentheses

-24r+3

Back to the equation:

-(-24r+3)



We get rid of parentheses

24r-3+123=0

We add all the numbers together, and all the variables

24r+120=0

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

24r=-120

r=-120/24

r=-5

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