Final answer:
Without additional information or the value of 'x', it isn't possible to calculate the measure of angle RST from the expressions given. More context or data is required to solve the problem accurately.
Step-by-step explanation:
The measure of angle RST is not provided directly in the student's question and is contingent on the particular problem they are solving. Typically, these expressions represent different possible measures or scenarios for the same angle, and the actual measure would be determined by substituting the value of 'x' once it's known or through using angle relationships, such as those in a triangle, parallel lines, or when dealing with adjacent angles. Since the student's question does not provide enough context or information to solve for 'x', we cannot provide a definitive measure for angle RST.
To find the measure of angle RST, we would need either the value of 'x' or additional information about the geometric figures involved. The process would involve substituting the known value into the expression that defines angle RST and solving for the measurement in degrees.