What is 45/3 + 7/12?
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Here's how we add
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Step 1Our denominators (bottom numbers) don't match, so we can't add yet. 12 goes into 3 evenly, so we only need to multiply one term to get a common denominator. Multiply 45 by 4, and get 180, then we multiply 3 by 4 and get 12. We now have a new problem, that looks like this:
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Step 2Since our denominators match, we can add the numerators. 180 + 7 = 187 Answer:
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Step 3Now, do we need to simplify this fraction? First, we attempt to divide 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... No good. 13 is larger than 12. So we're done reducing. Congratulations! Here's your final answer to 45/3 + 7/12
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