6r+12=78

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Solution for 6r+12=78 equation: 



6r+12=78

We move all terms to the left:

6r+12-(78)=0

We add all the numbers together, and all the variables

6r-66=0

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

6r=66

r=66/6

r=11

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