7-r=2r-5

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Solution for 7-r=2r-5 equation: 



7-r=2r-5

We move all terms to the left:

7-r-(2r-5)=0

We add all the numbers together, and all the variables

-1r-(2r-5)+7=0

We get rid of parentheses

-1r-2r+5+7=0

We add all the numbers together, and all the variables

-3r+12=0

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

-3r=-12

r=-12/-3

r=+4

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