If `a+b+c= 0`, then `(a+b)/(c )`= ?

Answer

To solve the problem, we start with the equation given:

1. **Given:** \( a + b + c = 0 \)

2. **Rearranging the equation:** We want to express \( a + b \) in terms of \( c \). We can do this by isolating \( a + b \):
\[ a + b = -c \]

3. **Substituting into the expression:** Now, we need to find \( \frac{a + b}{c} \). We can substitute \( a + b \) with \(-c\):
\[ \frac{a + b}{c} = \frac{-c}{c} \]

4. **Simplifying the expression:** Now we simplify the fraction:
\[ \frac{-c}{c} = -1 \]

5. **Conclusion:** Therefore, we find that:
\[ \frac{a + b}{c} = -1 \]

### Final Answer:
\[ \frac{a + b}{c} = -1 \]

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