-9=r/13

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Solution for -9=r/13 equation:



-9=r/13
We move all terms to the left:
-9-(r/13)=0
We add all the numbers together, and all the variables
-(+r/13)-9=0
We get rid of parentheses
-r/13-9=0
We multiply all the terms by the denominator
-r-9*13=0
We add all the numbers together, and all the variables
-1r-117=0
We move all terms containing r to the left, all other terms to the right
-r=117
r=117/-1
r=-117

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