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r=7/2
We simplify the equation to the form, which is simple to understand
r=7/2
Simplifying:
r=+3.5
We move all terms containing r to the left and all other terms to the right.
+1r=+3.5
We simplify left and right side of the equation.
+1r=+3.5
We divide both sides of the equation by 1 to get r.
r=3.5
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