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Mathematics 13 Online
OpenStudy (anonymous):

7 1 - + - 12 4

OpenStudy (anonymous):

@jazy

OpenStudy (anonymous):

Whats the LCD(least common denominator)? What number do 12 and 4 both go into.

OpenStudy (anonymous):

12

OpenStudy (anonymous):

Right!

OpenStudy (anonymous):

So \[\frac{ 7 }{ 12 } = \frac{ 7 }{ 12 }\]\[\frac{ 1 }{ 4 } = \frac{ ? }{ 12 }\]

OpenStudy (anonymous):

4 * 3 got you to 12. So multiply 1 * 3 to find the denominator.

OpenStudy (anonymous):

*numerator

OpenStudy (anonymous):

iTs 3

OpenStudy (anonymous):

Okay so you have\[\frac{ 7 }{ 12 } + \frac{ 3 }{ 12 } =\]

OpenStudy (anonymous):

Remember you NEVER add or subtract denominators.

OpenStudy (anonymous):

So Its 10 - 12

OpenStudy (anonymous):

Right, but can you simplify that?

OpenStudy (anonymous):

Yeaa Nd It Will Be 5 Right - 12

OpenStudy (anonymous):

No when you simplify you do the same to both the numerator AND the denominator. So you divide the top AND bottom by 2.

OpenStudy (anonymous):

What do you get?

OpenStudy (anonymous):

5 - 6

OpenStudy (anonymous):

@jazy

OpenStudy (anonymous):

Yep! (:

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