-124=4(1+8r)

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Solution for -124=4(1+8r) equation: 



-124=4(1+8r)

We move all terms to the left:

-124-(4(1+8r))=0

We add all the numbers together, and all the variables

-(4(8r+1))-124=0



We calculate terms in parentheses: -(4(8r+1)), so:

4(8r+1)

We multiply parentheses

32r+4

Back to the equation:

-(32r+4)



We get rid of parentheses

-32r-4-124=0

We add all the numbers together, and all the variables

-32r-128=0

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

-32r=128

r=128/-32

r=-4

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