7r-10=4r+20

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Solution for 7r-10=4r+20 equation:



7r-10=4r+20
We move all terms to the left:
7r-10-(4r+20)=0
We get rid of parentheses
7r-4r-20-10=0
We add all the numbers together, and all the variables
3r-30=0
We move all terms containing r to the left, all other terms to the right
3r=30
r=30/3
r=10

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