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4(7r+2)=31
We simplify the equation to the form, which is simple to understand
4(7r+2)=31
Reorder the terms in parentheses
+(+28r+8)=31
Remove unnecessary parentheses
+28r+8=+31
We move all terms containing r to the left and all other terms to the right.
+28r=+31-8
We simplify left and right side of the equation.
+28r=+23
We divide both sides of the equation by 28 to get r.
r=0.821428571429
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