Answer:
8
Step-by-step explanation:
The given inequality is
[tex]3x>21[/tex]
Divide both sides by 3.
[tex]\dfrac{3x}{3}>\dfrac{21}{3}[/tex]
[tex]x>7[/tex]
It means all number which are greater than 7 are the solution of given inequality.
We need to find the smallest whole number that is a solution to the given inequality.
The smallest whole number which is greater that 7 is 8.
Therefore, the required number is 8.