Respuesta :

1 Set up the long addition.

12+42

2 Calculate 2 + 2, which is 4.

12+424
3 Calculate 1 + 4, which is 5.

12+4254
4 Therefore, 12 + 42 = 54.
54

Hey there

Solutions 

12 + 42 
= 54 

CHECK YOUR WORK 
54 - 12 
= 42 

The answer was correct