Find the Sum or Difference $$( - 1 + 9 i ) - ( 6 + 5 i ) - ( - 3 + 7 i )$$

question 98

Multiple Choice

Find the sum or difference. Write the answer in standard form.
- $$( - 1 + 9 i ) - ( 6 + 5 i ) - ( - 3 + 7 i )$$

• A) \(- 4 + 21 \mathrm { i }\)
• B) \(2 + 21 \mathrm { i }\)
• C) \(- 4 - 3 \mathrm { i }\)
• D) \(- 10 + 11 \mathrm { i }\)