The number is 1.
The answer is 1 thats the only number that can go into 7 and 9
1
1
5 and 7 are prime numbers. and 3 goes into 9, so the only number that goes into 5, 7, and 9 is 1. They are what we call "relatively prime", even though 9 is not prime, because they have no common factors other than 1.
1 goes into 7 and 5 and 8 and 9 and 6
7 is a prime number so 9,7 and 26 have nothing in common but 1.
7 goes into 65 9 times with 2 leftover.
The only whole number that goes into "7" evenly is 7.The number "7" also goes into the number "70" evenly (10x7=70).
1 is the only # that goes into 7
7 goes into 9 1 time with 2 remaining
the number that goes into 5,7,8 is the number 6