15=-7+3r

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Solution for 15=-7+3r equation:


15=-7+3r

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

We move all terms containing r to the left and all other terms to the right. 
-3r=-7-15

We simplify left and right side of the equation. 
-3r=-22

We divide both sides of the equation by -03 to get r. 
r=7.33333333333

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