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Adding and subtracting

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by

Ms. Paganin

on 20 May 2014

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Transcript of Adding and subtracting

Adding and subtracting
Step 1
First, we are going to add. So what we are going to do is pick 2 differnt fractions like, 3/7 and 4/5.
Step 2
Next, we set them up like we were sutracting. 3/7+4/5=?
Step 3
Now we cant have differnt denominators so heres what we're going to do.
3/7=?
4/5=?
Then we multiply the two denominators together and we will get 35. Next you multiply seven and four,that makes 28 that will make 28/35. Now you mutiply five and three. That will make 15/35.
Step 3
Now lets set them up. 28/35+15/35= 63/35. Do you know how I got the awnser well all I did was add 28 plus 16 and got 63.
Yay your done!
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