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r\5+6\5=r\7+8\7
We simplify the equation to the form, which is simple to understand
r\5+6\5=r\7+8\7
We move all terms containing r to the left and all other terms to the right.
+1r-1r=+8-6
We simplify left and right side of the equation.
r=+2
0=2
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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