25+3r=100

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Solution for 25+3r=100 equation: 



25+3r=100

We move all terms to the left:

25+3r-(100)=0

We add all the numbers together, and all the variables

3r-75=0

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

3r=75

r=75/3

r=25

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