AMC 8 1992 Problem 6

Suppose that

means $a+b-c$ . For example,

is $5+4-6 = 3$ . Then the sum

is $\text{(A)}\ -2 \text{(B)}\ -1 \text{(C)}\ 0 \text{(D)}\ 1 \text{(E)}\ 2$

Dataset text NuminaMath-1.5. Quoted with source.

Show the answer

Solutions

No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.