2(1-6r)+7=81

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Solution for 2(1-6r)+7=81 equation: 



2(1-6r)+7=81

We move all terms to the left:

2(1-6r)+7-(81)=0

We add all the numbers together, and all the variables

2(-6r+1)+7-81=0

We add all the numbers together, and all the variables

2(-6r+1)-74=0

We multiply parentheses

-12r+2-74=0

We add all the numbers together, and all the variables

-12r-72=0

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

-12r=72

r=72/-12

r=-6

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