The key to mitosis occurring is the presence of a nucleus.
The number is
.
<u>Explanation:</u>
We have , Four times the sum of a number and -3 is 4 more than times the number.Let's consider step by step as :
Let the number be x , Four times sum of a number & -3 is
. Now, this is 4 more than times the number i.e
. According to question these both statements are equivalent as :
⇒
⇒ 
⇒ 
⇒
Swelling around the neck due to deficiency in iodine