Question

if LCM (77 , 99 ) = 693 find HCF (77 , 99) = ? LCM *HCF = a+b

Answer 1

Here use the formula:LCM*HCF=a+b
Where:

a=77
b=99
LCM= 693
HCF=x

And find your HCF

If u understand like it

Answer 2

As given,

lcm ( 77, 93) = 693

a = 77 ----}(from question)

b = 99 ----}(from question)

formula is,

lcm= a * b / hcf

hcf = a* b /lcm

hcf = 77 * 99 / 693

hcf = 11

hope this helps!!!