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12r-4=52
We simplify the equation to the form, which is simple to understand
12r-4=52
We move all terms containing r to the left and all other terms to the right.
+12r=+52+4
We simplify left and right side of the equation.
+12r=+56
We divide both sides of the equation by 12 to get r.
r=4.66666666667
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