Answer:
[tex]3a - 21[/tex]
Step-by-step explanation:
Given
[tex]3(a - 7)[/tex]
Required
Simplify
To do this, we apply distributive property;
[tex]3(a - 7)= 3 * a - 3 * 7[/tex]
[tex]3(a - 7)= 3a - 21[/tex]
Hence, the simplified form is [tex]3a - 21[/tex]
