Question

Q2. Use the properties of rational numbers to solve the following. i)- 12/11 × 21/5 + 22/11 × 9/5
Answer = 6 6/11​

Answer 1

Step-by-step explanation:

i)- 12/11 × 21/5 + 22/11 × 9/5

={(- 12 × 21)+ (22 × 9)}/(11x5)

={(- 252+ 198)}/(11x5)

={-54/55}