31.50=3.50+r

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Solution for 31.50=3.50+r equation:


31.50=3.50+r

We simplify the equation to the form, which is simple to understand 
31.50=3.50+r

We move all terms containing r to the left and all other terms to the right. 
-1r=+3.5-31.5

We simplify left and right side of the equation. 
-1r=-28

We divide both sides of the equation by -01 to get r. 
r=28

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