4-2r=-7

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Solution for 4-2r=-7 equation: 



4-2r=-7

We move all terms to the left:

4-2r-(-7)=0

We add all the numbers together, and all the variables

-2r+11=0

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

-2r=-11

r=-11/-2

r=5+1/2

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