94.6k views
0 votes
-4 5/4 + 8/9 GIVING 30 POINTS PLEASE HELP THE INTERNET IS GIVING ME ALL SORTS OF DIFFERENT ANSWERS.

User SoapBox
by
8.4k points

1 Answer

1 vote

We are given the following:


-4(5)/(4)+(8)/(9)

The first thing we need to do is convert the mixed numbers into improper fractions.


4(5)/(4) = (21)/(4)

Now, we find the LCM (Least Common Multiple) of 4 and 9, which is 36. Then we adjust the fractions based on the LCM.


=-(189)/(36) +(32)/(36)

Next, we apply the fraction rule,
(a)/(c)+(b)/(c) = (a+b)/(c) to the expression based on our information.


(-189+32)/(36)

Then, we add the numbers
-189+32=-157, writing the fraction as:


(-157)/(36)

Apply the fraction rule,
(-a)/(b)=-(a)/(b).


-(157)/(36)

Finally, convert the improper fractions back to mixed numbers, and hence our solution:


-(157)/(36) = -4(13)/(36)

Hope this helps!

User Jeff Zeitlin
by
7.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories