Solve for x then find the measurement of angle a

both A and B are the same

10x+24 = 6x+72

subtract 6 x from both sides

4x +24 = 72

subtract 24 from both sides:

4x = 48

divide both sides by 4
x = 48 / 4 = 12

angle a  = 10x+24 = 10(12) +24 = 120 + 24 = 148 degrees