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How do you get these problems??
1 3/4 + 4/5 and 3 1/8 - 1 1/2

When you add and subtract fractions, you need to use their common denominators.

1 3/4 + 4/5 = 1 15/20 + 16/20 = 1 31/20 = 2 11/20

Then does 3 1/8 - 1 1/2 = 2 3/8??

No. Sorry.

3 1/8 - 1 4/8 = 2 9/8 - 1 4/8 = ?

Ohhhhhh ok now i understand it you have to borrow from the whole number right?

Right! :-)

Ohh ok thank you so much for your help =]

You're very welcome. :-)

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