-12=r-(-8)

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Solution for -12=r-(-8) equation:


-12=r-(-8)

We simplify the equation to the form, which is simple to understand 
-12=r-(-8)

Remove unnecessary parentheses
-12=r+8

We move all terms containing r to the left and all other terms to the right. 
-1r=+8+12

We simplify left and right side of the equation. 
-1r=+20

We divide both sides of the equation by -01 to get r. 
r=-20

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