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# How do a subtract fraction with mixed number explain

how would I solve the problem 4 1/2 - 8 1/5 Can someone explain how this is done. Thank You!!!

Asked by ladycollect at 12:03 PM on Jul. 5, 2009 in Just for Fun

Level 1 (3 Credits)
• Yep, common denominator. I'd also combine the mixed numbers into simple fractions to make it simpler...

4 1/2 - 8 1/5 =

(40/10 + 5/10) - (80/10 + 2/10) =

45/10 - 82/10 =

(45 - 82) /10

-37/10

Now uncombine the mixed numbers....

- (30/10 + 7/10) =

-3 7/10

Answer by kaycee14 at 12:26 PM on Jul. 5, 2009

• find the common denominator of the fraction.

Answer by babycakes254 at 12:11 PM on Jul. 5, 2009

• Hint: it is 10.

Answer by babycakes254 at 12:11 PM on Jul. 5, 2009

• You do realize that you'll end up with a negative number right? negative 4 3/10

Answer by Anonymous at 12:22 PM on Jul. 5, 2009

• If you want to check your work on a simple calculator...

Convert each fraction to a decimal...

4 1/2 - 8 1/5

4.5 - 8.2

-3.7 which is the same as -3 7/10

Answer by kaycee14 at 12:29 PM on Jul. 5, 2009