-4=r/2+-2

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Solution for -4=r/2+-2 equation: 



-4=r/2+-2

We move all terms to the left:

-4-(r/2+-2)=0

We add all the numbers together, and all the variables

-(r/2-2)-4=0

We get rid of parentheses

-r/2+2-4=0

We multiply all the terms by the denominator


-r+2*2-4*2=0

We add all the numbers together, and all the variables

-1r-4=0

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

-r=4

r=4/-1

r=-4

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