25(r-4)=200

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Solution for 25(r-4)=200 equation: 



25(r-4)=200

We move all terms to the left:

25(r-4)-(200)=0

We multiply parentheses

25r-100-200=0

We add all the numbers together, and all the variables

25r-300=0

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

25r=300

r=300/25

r=12

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