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Anonymous
so the question 1/4+1/5 find the least common denominator of the two fractions. This is 20. Now 1/4=?/20 cross multiply and you get 5. Then so 1/5= 4/20 so 4/20+5/20=9/20
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4/5 (4 over 5)
1 and 1 over 20
5/4 plus 6 = 7 1/4
4 3/4 + 1/4 = 5.
6/5 or 1 1/5