7*r=21

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Solution for 7*r=21 equation:


7*r=21

We simplify the equation to the form, which is simple to understand 
7*r=21

Simplifying:
+7r=21

We move all terms containing r to the left and all other terms to the right. 
+7r=+21

We simplify left and right side of the equation. 
+7r=+21

We divide both sides of the equation by 7 to get r. 
r=3

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