2-7r=77

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Solution for 2-7r=77 equation: 



2-7r=77

We move all terms to the left:

2-7r-(77)=0

We add all the numbers together, and all the variables

-7r-75=0

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

-7r=75

r=75/-7

r=-10+5/7

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