How to do this ? I got help for 1&2 but I don't know how this works . I've been sick from school so I just don't get how this is done ? Please help me . Thank you

Question

shadowlegendx · Answer

When you get back...what is your question?

sarahvubble · Answer

How to add and subtract w like denominators by using LCD??

shadowlegendx · Answer

Like

$$\frac{ 1 }{ 2 } - \frac{ 1 }{ 4 } $$

shadowlegendx · Answer

?

shadowlegendx · Answer

The way you would solve the above problem is by finding the Lowest Common Denominator, or LCD.

2 goes into 4 twice, 
4 goes into 4 once,

4 can be our LCD.

We want to convert 1/2 to a number over 4.

Since we multiply 2 on the bottom, by 2, to get 4, we do the same to 1 on the top.

$$\frac{ 2 }{ 2 } \times \frac{ 1 }{ 2 } = \frac{ 2 }{ 4 }$$

shadowlegendx · Answer

Now that we have our common denominator.

$$\frac{ 2 }{ 4 } - \frac{ 1 }{ 4 } = \frac{ 1 }{ 4 }$$

shadowlegendx · Answer

Remember that only the numerators subtract(the number on the top), not the denominators

turbostudier · Answer

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