Question

Use counters to add 2+ -1.​

Answer 1

1

Explanation:

Negative 1 is used as a minus sign. I canceled the plus and now the equation is 2-1

Answer 2

the answer is 1

Explanation:

2+(-1)

2-1

1

+ and - always result in - so +(-1) is -1 and 2-1 is 1.