SOLUTION: Add -4/5 + (-3/4) I do not understand this question at all if someone could please explain to me. I simply do not understand how to add the already minused numbers I guess. I t

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Question 115223: Add -4/5 + (-3/4)
I do not understand this question at all if someone could please explain to me. I simply do not understand how to add the already minused numbers I guess. I think that is my problem other than being confused.

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Solved by pluggable solver: Fractions Solver


Start with the given expression




In order to add these two fractions, these fractions need to have a common denominator.


In order to do that, we simply find that the LCM of 5 and 4 is 20 (note: if you need help with finding the LCM, check out this solver)


Now we need to get each denominator to 20



Multiply by


Multiply and to get



Multiply by


Multiply and to get



Since both fractions have a common denominator of 20, we can now combine the fractions


Combine the fractions


Add the numerators



So




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