5r+12=7

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Solution for 5r+12=7 equation: 



5r+12=7

We move all terms to the left:

5r+12-(7)=0

We add all the numbers together, and all the variables

5r+5=0

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

5r=-5

r=-5/5

r=-1

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