4r-1+2=-7

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Solution for 4r-1+2=-7 equation: 



4r-1+2=-7

We move all terms to the left:

4r-1+2-(-7)=0

We add all the numbers together, and all the variables

4r+8=0

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

4r=-8

r=-8/4

r=-2

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