21+4r=73

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Solution for 21+4r=73 equation:



21+4r=73
We move all terms to the left:
21+4r-(73)=0
We add all the numbers together, and all the variables
4r-52=0
We move all terms containing r to the left, all other terms to the right
4r=52
r=52/4
r=13

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