15=(-7)+r/3

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Solution for 15=(-7)+r/3 equation:


15=(-7)+r/3

We simplify the equation to the form, which is simple to understand 
15=(-7)+r/3

Simplifying:
15=(-7) + 0.333333333333r

Remove unnecessary parentheses
15=-7 + 0.333333333333r

We move all terms containing r to the left and all other terms to the right. 
-0.333333333333r=-7-15

We simplify left and right side of the equation. 
-0.333333333333r=-22

We divide both sides of the equation by -00.333333333333 to get r. 
r=66.0000000001

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