What is 100/72 + 6/12?
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Let's add
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Step 1Our denominators (bottom numbers) don't match, so we can't add yet. Since 12 is evenly divided by 72, we can multiply just one term to get a common denominator. Multiply 6 by 6, and get 36, then we multiply 12 by 6 and get 72. The problem now has new fractions to add:
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Step 2Since our denominators match, we can add the numerators. 100 + 36 = 136 The sum we get is
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Step 3The last step is to reduce the fraction if we can. 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:
Now, try the same number again. Are both the numerator and the denominator evenly divisible by 2? Yes! So we reduce it:
Now, try the same number again. Are both the numerator and the denominator evenly divisible by 2? Yes! So we reduce it:
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... No good. 11 is larger than 9. So we're done reducing. Congratulations! Here's your final answer to 100/72 + 6/12
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