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2(r-4)=5(r-7)
We simplify the equation to the form, which is simple to understand
2(r-4)=5(r-7)
Reorder the terms in parentheses
+(+2r-8)=5*(r-7)
Remove unnecessary parentheses
+2r-8=+5+*(+r-7+)
Reorder the terms in parentheses
+2r-8=+(+5r-35)
Remove unnecessary parentheses
+2r-8=+5r-35
We move all terms containing r to the left and all other terms to the right.
+2r-5r=-35+8
We simplify left and right side of the equation.
-3r=-27
We divide both sides of the equation by -3 to get r.
r=9
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