Marcus wants to use a model to determine the difference
−8−3(+3). He starts with 8 negative counters.
He wants to add 3 positive counters to the model without changing the value. How can he do that?
1 -6
2 -5
3 B
4 B
5 B,E
6 D
7 -10
10 first and second one is -3 the third one is -9
hopes this helps :)