Answer:
73 degrees
Step-by-step explanation:
So first, since there are two lines that are parallel, and there is a transversal, angle a and angle b are supplementary due to same side interior angles.
Next, we make an equation: 6x-35+3x+53=180, and after that you come up with 9x+18=180. Put the numbers on one side and the variables on one side, and since you put 18 on the other side, you have to change it to -18. 180-18= 162.
9x=162. In conclusion, x=18. And to find angle a, plug x in. Therefore, the final answer is 73 degrees
