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r+6.7=-3.1
We simplify the equation to the form, which is simple to understand
r+6.7=-3.1
We move all terms containing r to the left and all other terms to the right.
+1r=-3.1-6.7
We simplify left and right side of the equation.
+1r=-9.8
We divide both sides of the equation by 1 to get r.
r=-9.8
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