The HCF of 28 77 and 91 is 7, since 7 goes into all the numbers and all the numbers above it dont.
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(-33/91) / (-3/77) =(33/91) / (3/77) = (33/91) * (77/3) = (11/91)*(77/1) =(11/13)*(11/1) = 121/13(-33/91) / (-3/77) =(33/91) / (3/77) = (33/91) * (77/3) = (11/91)*(77/1) =(11/13)*(11/1) = 121/13(-33/91) / (-3/77) =(33/91) / (3/77) = (33/91) * (77/3) = (11/91)*(77/1) =(11/13)*(11/1) = 121/13(-33/91) / (-3/77) =(33/91) / (3/77) = (33/91) * (77/3) = (11/91)*(77/1) =(11/13)*(11/1) = 121/13
It is: 11
The GCF is 7.
It is: 13
It is: 13