r+(-10)=-20

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Solution for r+(-10)=-20 equation:


r+(-10)=-20

We simplify the equation to the form, which is simple to understand 
r+(-10)=-20

Remove unnecessary parentheses
+r-10=-20

We move all terms containing r to the left and all other terms to the right. 
+1r=-20+10

We simplify left and right side of the equation. 
+1r=-10

We divide both sides of the equation by 1 to get r. 
r=-10

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