Respuesta :
Answer:
Step-by-step explanation:
Alright, lets get started.
The given is :
[tex]63+?=87[/tex]
Suppose the asked number is x, so
[tex]63+x=87[/tex]
It means we need to find x.
If we subtract 63 from both sides, the give equation will become:
[tex]63+x-63=87-63[/tex]
[tex]x=24[/tex]
So the missing number is 24 : Answer
