12r-21=6r

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Solution for 12r-21=6r equation:


12r-21=6r

We simplify the equation to the form, which is simple to understand
12r-21=6r

We move all terms containing r to the left and all other terms to the right.
+12r-6r=+21

We simplify left and right side of the equation.
+6r=+21

We divide both sides of the equation by 6 to get r.
r=3.5

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