-4=2r-5

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Solution for -4=2r-5 equation: 



-4=2r-5

We move all terms to the left:

-4-(2r-5)=0

We get rid of parentheses

-2r+5-4=0

We add all the numbers together, and all the variables

-2r+1=0

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

-2r=-1

r=-1/-2

r=1/2

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