$\"\"$

The replacement set is $\"\"$

Replace t in $\"\"$ with each value in the replacement set and

check whether the equation is true or not. \ \

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

Since t = 20 makes the equation true, the solution of $\"\"$ is 20. $\"\"$

The solution set is $\"\"$ .