(6r-7)+55=90

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Solution for (6r-7)+55=90 equation: 



(6r-7)+55=90

We move all terms to the left:

(6r-7)+55-(90)=0

We add all the numbers together, and all the variables

(6r-7)-35=0

We get rid of parentheses

6r-7-35=0

We add all the numbers together, and all the variables

6r-42=0

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

6r=42

r=42/6

r=7

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