Question 43764
Hello!
First of all, since you're summing a negative number (-3/4), this is the same as subtracting it. So you get:

{{{-4/5 - 3/4}}}

Next, you need to find the Least Common Denominator (LCD) in order to make this sum. In this case, it's 20. Therefore, you get:

{{{-4/5 - 3/4 =(-4*(20/5) - 3*(20/4)) /20 =(-4*4 -3*5) /20 = (-16-15)/20 = -31/20}}}


Therefore, the result is -31/20


I hope this helps!
Get more answers at <a href=http://www.onlinemathanswers.com>Online Math Answers.com</a>!