Answer:
65
Step-by-step explanation:
difference between 7 and 64 is 57
:. 8+57= 65
x= 65
when y=8 x= 73 ❤️❤️❤️❤️❤️
-18
Left Hand Side = -2(7a + 9b) = -14a - 18b
Comparing it with Right Hand Side, ? = -18