Answer:
C
Step-by-step explanation:
If you plug in 4 to the equation it looks like this:
48-5= 20+23. Subtract 5 and add 23, to get 43=43. That statement is true so it's 4.
The supplementary angle to 69 degrees would be 111 DEGREES.
because it has to add up to 180 (69 + 111 = 180)
