Find the lcm of 7 and 12. show your work.

The easiest way to find the LCM is to keep listing multiples until you find a common one.

Multiples of 7:

7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84

Multiples of 12:

12, 24, 36, 48, 60, 72, 84

84 is the LCM

The least common multiple of 7 and 12 is 84.

7*12=84

Step-by-step explanation:

Factors of 7: 1, and 7.  

1*7=7

Factors of 12: 1, 2, 3, 4, 6, 12.

1*12=12

2*6=12

3*4=12

4*3=12

6*2=12

12*1=12

7*12=84

Hope this helps!

-Charlie

Have a great day!

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.