Question

can anyone help me with this​

Answer 1

Answer:

I only know how to do the LCM but thats it sorry

Step-by-step explanation:

I got this from the internet sorry if it dosen't help

LCM(84,90) = 1260

Answer 2

Answer:

HCF = 2 * 3

LCM = 2 *2 * 3 * 3 * 5 * 7

Step-by-step explanation:

A) 84 = 2 * 2  * 3 * 7

   90 =  2 * 3 * 3 * 5

HCF = 2 * 3

B) 84 = 2 * 2 * 3 *7

   90 = 2 * 3 * 3 * 5

LCM = 2 *2 * 3 * 3 * 5 * 7