2r+8-4=-7

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Solution for 2r+8-4=-7 equation: 



2r+8-4=-7

We move all terms to the left:

2r+8-4-(-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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