math help

What is 4/52 + 4/7?

What is 4/52 + 4/7?

Here's how we add

4
52
+
4
7

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 4 by 7, and get 28, then we multiply 52 by 7 and get 364.

4/52 times 7

Now for the second term. You multiply 4 by 52, and get 208, then multiply 52 by 7 and get 364.

4/7 times 52

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

28
364
+
208
364

Step 2

Since our denominators match, we can add the numerators.

28 + 208 = 236

Answer:

236
364

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:

236
364
÷ 2 =
118
182

Now, try the same number again.

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

118
182
÷ 2 =
59
91

Now, try the same number again.

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

Nope. Try the next prime number, 5...

Nope. Try the next prime number, 7...

Nope. Try the next prime number, 11...

Nope. Try the next prime number, 13...

Nope. Try the next prime number, 17...

Nope. Try the next prime number, 19...

Nope. Try the next prime number, 23...

Nope. Try the next prime number, 29...

Nope. Try the next prime number, 31...

Nope. Try the next prime number, 37...

Nope. Try the next prime number, 41...

Nope. Try the next prime number, 43...

Nope. Try the next prime number, 47...

Nope. Try the next prime number, 53...

Nope. Try the next prime number, 59...

Nope. Try the next prime number, 61...

No good. 61 is larger than 59. So we're done reducing.

Congratulations! Here's your final answer to 4/52 + 4/7

4
52
+
4
7
=
59
91
© 2014 Randy Tayler