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تابع

تابع

Full solution

Q. تابع
  1. Recognize Rule: Recognize that subtracting a positive number is the same as adding its negative equivalent. So, 54-5 - 4 is the same as 5+(4)-5 + (-4).
  2. Add Negative Numbers: Add the two negative numbers together. 5+(4)-5 + (-4) equals 9-9.
  3. Check Result: Check the result. Adding two negative numbers makes a bigger negative number, so 9-9 makes sense.