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7r+2=5(4-r)
We simplify the equation to the form, which is simple to understand
7r+2=5(4-r)
Reorder the terms in parentheses
7r+2=+(+20-5r)
Remove unnecessary parentheses
+7r+2=+20-5r
We move all terms containing r to the left and all other terms to the right.
+7r+5r=+20-2
We simplify left and right side of the equation.
+12r=+18
We divide both sides of the equation by 12 to get r.
r=1.5
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