Solution:
1. Calculate the sum of negative seven and six:
- -7 + 6 = -1
2. Multiply the result by nine:
- 9 \times (-1) = -9
The calculation steps show that the answer is: -1 \times 9 = -9
Frequently asked questions (FAQs)
Question: Given that ΔABC and ΔDEF are two triangles, if AB = DE, ∠BAC = ∠EDF, and ∠ABC = ∠DEF, can we conclude that the triangles are congruent? Why or why not? (