Out of the choices given, the thing that comes first in an online catalog entry is the author's last name. This is so any person can find the book easily and in alphabetical order. The correct answer is D.
first Multiply the first fraction by the reciprocal of the second fraction.
in the first place we should multiply 1 by 5 and write it over the new fraction and then multiply 2 by -2 and write it under the new fraction, this way you will get 5/-4
Then we Rewrite them like -5/4 + -1/4 = -6/2 and simplify it to -3/2 .
hope it can help . ^^
