The greatest common factor for 7 and 13 is 1, because they are both prime numbers and prime numbers have no factors except themselves and 1.
The least common multiple is 91. Again, since 7 and 13 are both prime numbers the LCM will be the product of the two because they don't have any common factors besides 1.
80a^3
You need at least two numbers to find an LCM.
Common multiples of a set of numbers are the multiples of their LCM. The next common multiple is the second multiple of LCM of 5 and 8. LCM of 5 and 8 is 40 and the second multiple of 40 is 80. So, the next common multiple is 80.
The LCM refers to whole numbers, not fractions.
2^6 3^7 5 26375
80a^3
The LCM is 42a2b2.
LCM[(13b3)3, 7b2] = LCM[2197b9, 7b2] = 2197*7*b9 = 15379*b9
LCM(5y3, 25y6) = 25y6
36y to the second power
Since 20x7z2 is a multiple of 4x5z2, it is automatically the LCM.
260ef3
The answer is 16x3
36xy2
The LCM is 72. The third LCM is 216.
2 x 33 = 54 That's one number. You need at least two to find an LCM.
The question is somewhat ambiguous: the answers are LCM[3T2, 5T] =15T2 or LCM[(3T)2, 5T] =45T2