Social Studies Application:Remembering that 1 AD came immediately after 1 BC: while solving following problems take 1 BC as -1 and 1 AD as +1
Turks ruled Egypt in the year 1517 AD and Queen Nefertiti ruled Egypt about 2900 years, before the Turks ruled. In which year did she rule?
Year in which Queen Nefertiti ruled = Year in which Turks ruled - 2900 yr
= (1517 AD) - 2900
For any two positive numbers, subtracting the larger from the smaller means, taking the negative of the smaller subtracted from the larger.
(x-y) = -(y-x)
= (+ 1517) - 2900 = - (2900 - 1517) [ as (x-y) = -(y-x)]
= -1383 = 1383 BC
Hence, Queen Nefertiti ruled in the year 1383 BC.