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18r-12r=192
We simplify the equation to the form, which is simple to understand
18r-12r=192
We move all terms containing r to the left and all other terms to the right.
+18r-12r=+192
We simplify left and right side of the equation.
+6r=+192
We divide both sides of the equation by 6 to get r.
r=32
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