HELP!! I WILL MARK YOU BRANLIEST IF YOU RESPOND THE FASTEST AND IF ITS CORRECT :) TWO PEOPLE PLEASE RESPOND SO I CAN MARK SOMONE BRAINLIEST! I will do one more after this one

Answer:
73
Step-by-step explanation:
6x-35 + 3x+53 =180
=> 9x +18 =180
=> x = 18
=> A = 6*18-35 = 73