math help

What is 16/48 + 3/9?

What is 16/48 + 3/9?

This is how to add

16
48
+
3
9

Step 1

We can't add two fractions with different denominators (the bottom number). So you need to get a common denominator - both bottom numbers need to match. To do this, you'll multiply the denominators times each other... but the numerators have to change, too. They get multiplied by the other term's denominator.

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

16/48 times 9

Do the same for the second term. We multiply 3 by 48, and get 144, then multiply 48 by 9 and get 432.

3/9 times 48

So now our fractions look like this:

144
432
+
144
432

Step 2

Since our denominators match, we can add the numerators.

144 + 144 = 288

Now we have an answer.

288
432

Step 3

Last of all, we need to simplify the fraction, if possible. Can it be reduced to a simpler fraction?

To find out, we try dividing it by 2...

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

288
432
÷ 2 =
144
216

Now, try the same number again.

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

144
216
÷ 2 =
72
108

Now, try the same number again.

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

72
108
÷ 2 =
36
54

Now, try the same number again.

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

36
54
÷ 2 =
18
27

Now, try the same number again.

Nope. Try the next prime number, 3...

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

18
27
÷ 3 =
6
9

Now, try the same number again.

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

6
9
÷ 3 =
2
3

Now, try the same number again.

No good. 3 is larger than 2. So we're done reducing.

Congratulations! Here's your final answer to 16/48 + 3/9

16
48
+
3
9
=
2
3
© 2014 Randy Tayler