5+7=r+9

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Solution for 5+7=r+9 equation:


5+7=r+9

We simplify the equation to the form, which is simple to understand 
5+7=r+9

We move all terms containing r to the left and all other terms to the right. 
-1r=+9-5-7

We simplify left and right side of the equation. 
-1r=-3

We divide both sides of the equation by -01 to get r. 
r=3

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