1-7(7r-1)=155

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Solution for 1-7(7r-1)=155 equation: 



1-7(7r-1)=155

We move all terms to the left:

1-7(7r-1)-(155)=0

We add all the numbers together, and all the variables

-7(7r-1)-154=0

We multiply parentheses

-49r+7-154=0

We add all the numbers together, and all the variables

-49r-147=0

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

-49r=147

r=147/-49

r=-3

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