What is 45/4 + 2/7?
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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 7, and get 315, then we multiply 4 by 7 and get 28. Do the same for the second term. We multiply 2 by 4, and get 8, then multiply 4 by 7 and get 28. The problem now has new fractions to add:
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Step 2Since our denominators match, we can add the numerators. 315 + 8 = 323 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... Nope. Try the next prime number, 29... No good. 29 is larger than 28. So we're done reducing. Congratulations! Here's your final answer to 45/4 + 2/7
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