Respuesta :

mohammadali7686

Answer:

1. 0

2. 130

3. − 9.9

sorry if am wrong

Answer:

1. 56 + (-56) = 56 - 56 = 0

2. -240 + 370 = 370-240 = 130

3. -5.7 + (-4.2) = -(5.7+4.2) = -9.9

Let me know if this helps!