math help

What is 1/4 + 4/6?

What is 1/4 + 4/6?

Let's add

1
4
 +
4
6

Step 1

Can you add yet? Nope! The denominators don't match. We need a common denominator. So next we take both denominators and multiply them. Next, take each numerator and multiply it by the denominator of the other term.

So, we multiply 1 by 6, and get 6, then we multiply 4 by 6 and get 24.

1/4 times 6

Now for the second term. You multiply 4 by 4, and get 16, then multiply 4 by 6 and get 24.

4/6 times 4

We now have a new problem, that looks like this:

6
24
 +
16
24

Step 2

Since our denominators match, we can add the numerators.

6 + 16 = 22

That gives us the sum, which is

22
24

Step 3

Now, do we need to simplify this fraction?

First, we attempt to divide it by 2...

Are both the numerator and the denominator evenly divisible by 2? Yes! So we reduce it:

22
24
 ÷ 2 =
11
12

Let's try dividing by that again...

Nope! So now we try the next greatest prime number, 3...

Nope! So now we try the next greatest prime number, 5...

Nope! So now we try the next greatest prime number, 7...

Nope! So now we try the next greatest prime number, 11...

Nope! So now we try the next greatest prime number, 13...

No good. 13 is larger than 11. So we're done reducing.

There you have it! Here's the final answer to 1/4 + 4/6

1
4
 +
4
6
 =
11
12
© 2014 Randy Tayler

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