-5(1+5r)=120

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Solution for -5(1+5r)=120 equation: 



-5(1+5r)=120

We move all terms to the left:

-5(1+5r)-(120)=0

We add all the numbers together, and all the variables

-5(5r+1)-120=0

We multiply parentheses

-25r-5-120=0

We add all the numbers together, and all the variables

-25r-125=0

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

-25r=125

r=125/-25

r=-5

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