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2(4r-5)=4(2r-4)
We simplify the equation to the form, which is simple to understand
2(4r-5)=4(2r-4)
Reorder the terms in parentheses
+(+8r-10)=4*(2r-4)
Remove unnecessary parentheses
+8r-10=+4+*(+2r-4+)
Reorder the terms in parentheses
+8r-10=+(+8r-16)
Remove unnecessary parentheses
+8r-10=+8r-16
We move all terms containing r to the left and all other terms to the right.
+8r-8r=-16+10
We simplify left and right side of the equation.
r=-6
0=-6
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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