Add 15/20 and 54/56
15/20 + 54/56 is 12/7.
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,
15/20 = 15 × 14/20 × 14 = 210/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
54/56 = 54 × 5/56 × 5 = 270/280 - Add the two like fractions:
210/280 + 270/280 = 210 + 270/280 = 480/280 - 480/280 simplified gives 12/7
- So, 15/20 + 54/56 = 12/7
In mixed form: 15/7
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