After tutoring younger students for a while, you've come up with a brilliant solution to ease your workload: create a simple equation solver that solves one variable, linear equations. These equations can contain any single, lowercase letter as a variable name.
Input Format
A String containing a linear equation containing one variable represented by an unknown lowercase letter.
Sample Input
4*j+7=3*j-4
Output Format A single line containing the value of the variable
Sample Output
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