In triangle ABC, m angle B is 10 degrees larger than m angle A, and m angle C is 5 degrees less than 3 times m angle A. Find m angle A.

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]