Find the LCM of 5 and 12. Show your work. (3 points) Part B: Find the GCF of 72 and 81. Show your work. (3 points)

Part C: Using the GCF you found in Part B, rewrite 72 + 81 as two factors. One factor is the GCF and the other is the sum of two numbers that do not have a common factor. Show your work.

A.

B.

GCF of 72 and 81,

72 = 2 X 2 X 2 X 3 X 3

81 = 3 X 3 X 3 X 3

GCF = 3 X 3 ( Common terms )

= 9,

Therefore, GCF of 72 and 81 is 9.

C.

Another two factors,

( 72 + 81 ) , 9,

153, 9

153 = 3 X 3 X 17

Here is also common terms ( 3,3 ) ,

Hence 153 and 9 are factors of 72 and 81.

y= -

the answer is a

step-by-step explanation: