Answer:
he was supposed to add three on both sides
28=12+x
28 represents how tall he will get, 12 represents how tall he is in inches, and x is how much he still has left to grow! Hope it helps!
Answer:
a = 112
Step-by-step explanation:

Given that,
s = 7
b = 13
c = (-24)
Let's solve for a now.





Hope this helps you.
Let me know if you have any other questions :-)