-4=r-76

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Solution for -4=r-76 equation: 



-4=r-76

We move all terms to the left:

-4-(r-76)=0

We get rid of parentheses

-r+76-4=0

We add all the numbers together, and all the variables

-1r+72=0

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

-r=-72

r=-72/-1

r=+72

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