9r-5r=20

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Solution for 9r-5r=20 equation:



9r-5r=20
We move all terms to the left:
9r-5r-(20)=0
We add all the numbers together, and all the variables
4r-20=0
We move all terms containing r to the left, all other terms to the right
4r=20
r=20/4
r=5

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