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Mathematics 21 Online
OpenStudy (anonymous):

12 - 3 1/4 = ?

OpenStudy (anonymous):

12-3 1/4 = 12/1 - 13/4 = 48-13/4 = 35/4 = 8 3/4

OpenStudy (anonymous):

thank you so much!!!

OpenStudy (anonymous):

It's my pleasure!!

OpenStudy (anonymous):

can you answer my other one? sorry.

OpenStudy (anonymous):

Please type it so I can try.

OpenStudy (anonymous):

1/2 + 1/5 - 4/20 = ?

OpenStudy (anonymous):

1/2 + 1/5 - 4/20 = 5+2/10 - 4/20 = 7/10 - 4/20 = 14-4/20 = 10/20 = 1/2

OpenStudy (anonymous):

omg youre a life saver!! thank you!

OpenStudy (anonymous):

That's very good to hear. Please note that both 5+2 are out of 10 i.e. the lowest common denominator.

OpenStudy (anonymous):

Also 14 - 4 is all out of 10 and not only 4 that is out of 10.

OpenStudy (anonymous):

I mean out of 20

OpenStudy (anonymous):

2/9x63 = 2/9 x 63/1 = 126/9 = 14

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