Adding Fractions with Unlike denominators

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  • Get to work students. You should know how to add and subtract fractions.
  • Mrs. Roxy
  • Good morning students. I am your substitute for this week. My name is Mrs.Roxy.
  • Our first problem is 3/2 + 1/4 = Try solving this problem! Ask me if you need help!
  • The denominators of both fractions are 2 and 4. We have to find the least common denominator. The common denominator of 2 and 4 would be 4 because 2x2 is equal to 4.
  • Since 1/4 already has a denominator of 4, then you need to multiply 3/2 by 2. So, 2x2 is 4 and 3x2 is 6. The new fraction would be 6/4. The equation will now be 6/4 + 1/4 = 7/4.
  • This is an improper fraction so you have to change it to a mixed number. To do that, you have to divide the numerator by the denominator, which would be 7 divided by 4. That is 1 and 3/4. HAPPY LEARNING!
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