math help

What is 16/48 + 2/9?

What is 16/48 + 2/9?

Here's how you add

16
48
+
2
9

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 16 by 9, and get 144, then we multiply 48 by 9 and get 432.

16/48 times 9

Now for the second term. You multiply 2 by 48, and get 96, then multiply 48 by 9 and get 432.

2/9 times 48

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

144
432
+
96
432

Step 2

Since our denominators match, we can add the numerators.

144 + 96 = 240

Answer:

240
432

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:

240
432
÷ 2 =
120
216

Let's try dividing by that again...

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

120
216
÷ 2 =
60
108

Let's try dividing by that again...

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

60
108
÷ 2 =
30
54

Let's try dividing by that again...

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

30
54
÷ 2 =
15
27

Let's try dividing by that again...

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

Are both the numerator and the denominator evenly divisible by 3? Yes! So we reduce it:

15
27
÷ 3 =
5
9

Let's try dividing by that again...

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

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

No good. 7 is larger than 5. So we're done reducing.

There you have it! Here's the final answer to 16/48 + 2/9

16
48
+
2
9
=
5
9
© 2014 Randy Tayler