Add 72/20 and 54/56
1st number: 3 12/20, 2nd number: 54/56
72/20 + 54/56 is 639/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
72/20 = 72 × 14/20 × 14 = 1008/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
54/56 = 54 × 5/56 × 5 = 270/280 - Add the two like fractions:
1008/280 + 270/280 = 1008 + 270/280 = 1278/280 - 1278/280 simplified gives 639/140
- So, 72/20 + 54/56 = 639/140
In mixed form: 479/140
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