2r+4=-1

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Solution for 2r+4=-1 equation: 



2r+4=-1

We move all terms to the left:

2r+4-(-1)=0

We add all the numbers together, and all the variables

2r+5=0

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

2r=-5

r=-5/2

r=-2+1/2

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