Answer:
(7x+18)°+(5x-6)° =180° adjacent angles sum up to 180°
7x+5x+18-6=180
12x+12=180
12x=180-12
12x=168
dividing through by 12
x=14
(3y+11)°=(7x+18)° corresponding angles
3y+11=7(14)+18
3y+11=98+18
3y+11=116
3y=116-11
3y=105
dividing through by 3
y=35