Add 54/56 and 15/20
54/56 + 15/20 is 12/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 20 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
54/56 = 54 × 5/56 × 5 = 270/280 - Likewise, for the 2nd fraction, since 20 × 14 = 280,
15/20 = 15 × 14/20 × 14 = 210/280 - Add the two like fractions:
270/280 + 210/280 = 270 + 210/280 = 480/280 - 480/280 simplified gives 12/7
- So, 54/56 + 15/20 = 12/7
In mixed form: 15/7
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