SOLUTION: Hello tutor, Im confused about a question "Add the following rational number" : "-15/4 and 7/4" now the problem is the exact answer is I can see in my book that the answer is

Algebra ->  Rational-functions -> SOLUTION: Hello tutor, Im confused about a question "Add the following rational number" : "-15/4 and 7/4" now the problem is the exact answer is I can see in my book that the answer is      Log On


   

Question 1062460: Hello tutor, Im confused about a question
"Add the following rational number" : "-15/4 and 7/4"
now the problem is the exact answer is I can see in my book
that the answer is -2 but in my calculation, my answer is
coming out to be -8/4. PLEASE LET ME KNOW WHAT IS THE
RIGHT ANSWER AND HOW!

Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!

%28-8%29%2F4

is the same as -2.

Why?

Because 

1. a negative number divided by a positive number
   always gives a negative answer.

2. when 8 is divided by 4, the answer is 2.

So the answer is -2.

Edwin