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.5+6=3-2r
We simplify the equation to the form, which is simple to understand
.5+6=3-2r
We move all terms containing r to the left and all other terms to the right.
+2r=+3-0.5-6
We simplify left and right side of the equation.
+2r=-3.5
We divide both sides of the equation by 02 to get r.
r=-1.75
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