Answer:
a , b
Step-by-step explanation:
ans this are the variables
The guy above did you dirty
you basically want to get x on it's own to find out what it equals so,
multiply both sides by 9:
x+2 = 45
take away 2 from both sides:
x = 43
The left side of the equal sign is exactly the same as the right side, so it has infinitely many solutions.