Answer:
7
Step-by-step explanation:
The greatest common factor or GCF of 7 and 49 is 7 because 7 is the highest number that can go into both numbers 7 and 49. No other number can go into those numbers except 7.
x,y
(x+y)
Thus, the HCF is (x+y).
57
180-123=57
that line the angle is on is a straight line and a straight line is 180 degrees
