63
They both go into 1440, for example.
The lowest common multiple of 3, 9 and 7 is 63
They both go into 56.
The LCM (least common multiple) of 5, 7, and 9 is 315.
7 and 9 are both divisible by one. 7 and 9 are both prime numbers, meaning the factors are 1 and themselves. The factors of 7 are 1 and 7. The factors of 9 are 1 and 9.
2*9=18 7*9=63 9 will go into both 18 and 63
63
Any multiple of 63.
Sixty-three.
63
9 and 13 both go into 117.
They both go into 1440, for example.
12X - 7 = 4X + 9 subtract 4X from both sides 8X - 7 = 9 add 7 to both sides 8X = 16 divide both sides by 8 X = 2 check 12(2) - 7 = 4(2) + 9 24 - 7 = 8 + 9 17 = 17 checks
7 is a prime number but 9 is a composite number
none 7 / 9 = 0 with a remainder of 7
-7