#20
OA) 2
OB) 6
OC) 12
OD 24
Answer:
The greatest common factor of 42, 60 and 78 is 6.
Step-by-step explanation:
The given numbers are : 42, 60 and 78
On Prime Factorization of the given terms, we get:
42 = 2 x 3 x 7
60 = 2 x 2 x 3 x 5
78 = 2 x 3 x 13
The common factors to all these three terms is 2 x 3 = 6
Hence, the greatest common factor of 42, 60 and 78 is 6.
3x + 2y + 5z = 16
7x + 3y – 4z = 11
Answer:
Step-by-step explanation: