7r-5r=10

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Solution for 7r-5r=10 equation: 



7r-5r=10

We move all terms to the left:

7r-5r-(10)=0

We add all the numbers together, and all the variables

2r-10=0

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

2r=10

r=10/2

r=5

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