4(r-5)=180

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Solution for 4(r-5)=180 equation: 



4(r-5)=180

We move all terms to the left:

4(r-5)-(180)=0

We multiply parentheses

4r-20-180=0

We add all the numbers together, and all the variables

4r-200=0

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

4r=200

r=200/4

r=50

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