Evaluate each expression when s = 9 and t = 12.
2s – t
2(9) - 12
18 - 12
6
To evaluate the expression 2s - t when s = 9 and t = 12, we substitute the given values into the expression.
2(9) - 12 = 18 - 12 = 6
Therefore, 2s - t equals 6 when s = 9 and t = 12.