r+.80=1.80

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Solution for r+.80=1.80 equation:


r+.80=1.80

We simplify the equation to the form, which is simple to understand 
r+.80=1.80

We move all terms containing r to the left and all other terms to the right. 
+1r=+1.8-0.8

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

We divide both sides of the equation by 1 to get r. 
r=1

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