Respuesta :
Answer:
61
Step-by-step explanation:
67+78-78 is basically just 67
The answer 67.
67+78-78
You’re basically adding 78 to 67 but then you have to take the 78 away again. So the number remains 67
67+78-78
You’re basically adding 78 to 67 but then you have to take the 78 away again. So the number remains 67