Question

factorise 7lm - 21lmn​

Answer 1

Answer:

7lm(1-3n)....will be answer..

Answer 2

Answer:

7lm(1-3n)

Step-by-step explanation:

FIrst divide both by 7

7(lm-3lmn)

Then you can take lm out of both

7lm(1-3n)