7-8r=-12

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Solution for 7-8r=-12 equation: 



7-8r=-12

We move all terms to the left:

7-8r-(-12)=0

We add all the numbers together, and all the variables

-8r+19=0

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

-8r=-19

r=-19/-8

r=2+3/8

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