Question

please give me the method how are you answering ​

Answer 1

Answer:

Step-by-step explanation:

In the 1st step we write the question as it is. then in 2nd one we take 21m to left hand side .. in 3rd step we take common at one side that is 7 ,m are common and remaining part in bracket then we give 7m i.e common = 0 and remaing non common factors = 0

Answer 2

firstly v have to make this equation a polynomial.therefore let take 21m to another side

7m²-21m=0

now.we can see that is there is something common in both terms or not..in this question 7m is common as 21 divides by 7.

therefore let take 7m common...

so, 7m(m-3)=0

now we can write as

7m=0 or m-3=0..

so that 7m=0

therefore m=0/7=0

or

m-3=0

m=0+3

m=3

hope u understand it now..!!