Question 476770
X=2Y-15
X+Y+33=180
2Y-15+Y+33=180
3Y=180-33+15
3Y=162
Y=162/3
Y=54 ANSWER FOR THE SECOND ANGLE.
X=2*54-15
X=108-15
X=93 ANSWER FOR THE FIRST/LARGEST ANGLE.
PROOF:
54+93+33=180
180=180