SOLUTION: How do I add -4/5 + (-3/4)?

Algebra ->  Expressions -> SOLUTION: How do I add -4/5 + (-3/4)?      Log On


   

Question 271345: How do I add -4/5 + (-3/4)?
Found 2 solutions by LarissaRichardson, solver91311:
Answer by LarissaRichardson(34) About Me  (Show Source):
You can put this solution on YOUR website!
Find the LCD which in this case is 20
-4/5 + -3/4
-16/20 + (-15/20)
-31/20

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


5 and 4 have no factors in common so the LCD is just the product, namely 20. Therefore:









All of which makes good sense because:



and



and



and



John