Question

At her birthday party, marcie's guests ate 2/3 of her birthday cake and her family ate 1/4 of the cake. How much cake was left after her party?

Answer 1

1/12

Explanation:

So you start with an equation. 2/3 plus 1/4= ?.

Step 1: Find a common donominator.

Count by each number until they meat up.

3 6 9 12

4 8 12

Step 2: Multiply.

Basically, make sure that if you do something to the bottom you do the same to the top. You have

`(2)/(3)` =
`(?)/(12)`. 3 times 4 is 12. 2 times 4 is 8. Your new fraction is
`(8)/(12)`.

`(1)/(4)` =
`(?)/(12)`. 4 times 3 is 12. 1 times 3 is 3. Your new fraction is
`(3)/(12)`.

Step 3: Just Add!

`(8)/(12) + (3)/(12)= (11)/(12)`

Step 4: Answer the question! The question asks "How much cake is left. You know that a whole cake is
`(12)/(12)`. So,
`(12)/(12) -(11)/(12) = (1)/(12)`