Answer:
10:12
or 10 to 12
or10/12
11
Step-by-step explanation:
All you have to do is plug in a. In this case, a=3.
21/a+4
21/(3)+4
21/3+4
7+4
If this helps please mark as brainliest
I,R,I,I,R,I,R,R,I,R,I,R,I,I,R,R,I,I,I,I
9x/4 + 30 + 5x/4
5 + 4/5t