What is 45/4 + 4/5?
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This is how you add
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Step 1Of course, you can't add two fractions if the denominators (bottom numbers) don't match. To get a common denominator, multiply the denominators together. Then we fix the numerators by multiplying each one by their other term's denominator. Now you multiply 45 by 5, and get 225, then we multiply 4 by 5 and get 20. Do the same for the second term. We multiply 4 by 4, and get 16, then multiply 4 by 5 and get 20. The problem now has new fractions to add:
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Step 2Since our denominators match, we can add the numerators. 225 + 16 = 241 This yields the answer
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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... 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... No good. 23 is larger than 20. So we're done reducing. Congratulations! Here's your final answer to 45/4 + 4/5
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