Respuesta :

berenizemartinez02
Sheila had 11 marbles. She gave 4 to Bobby, 5 to Carla, and 2 to jenna.
MollyRogers

Answer:

Addition of the opposite

Step-by-step explanation:

You are adding a negative number to the original (11) and that number you are adding ir the opposite of the first one, so the process will result in a zero (neutral element of the addition)