3r-87=

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Solution for 3r-87= equation:


3r-8>7=0

We simplify the equation to the form, which is simple to understand 
3r-8>7=0

We move all terms containing r to the left and all other terms to the right. 
+3r=0+8

We simplify left and right side of the equation. 
+3r=+8

We divide both sides of the equation by 3 to get r. 
r=2.66666666667

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