-5-7(1+3r)=-180

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Solution for -5-7(1+3r)=-180 equation: 



-5-7(1+3r)=-180

We move all terms to the left:

-5-7(1+3r)-(-180)=0

We add all the numbers together, and all the variables

-7(3r+1)-5-(-180)=0

We add all the numbers together, and all the variables

-7(3r+1)+175=0

We multiply parentheses

-21r-7+175=0

We add all the numbers together, and all the variables

-21r+168=0

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

-21r=-168

r=-168/-21

r=+8

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