Question

If GCD and LCM of the numbers 12x and 21x are 12 and 420 respectively,then x=?​

Answer 1

*ANSWER:;:

product of numbers =product of LCM GCD

12X×21X=12×420

12(21X^2)=12(420)

21X^2=420

21(X^2)=21(20)

X^2=20

X=√20