Add 21/56 and 18/60
21/56 + 18/60 is 27/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 60 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
21/56 = 21 × 15/56 × 15 = 315/840 - Likewise, for the 2nd fraction, since 60 × 14 = 840,
18/60 = 18 × 14/60 × 14 = 252/840 - Add the two like fractions:
315/840 + 252/840 = 315 + 252/840 = 567/840 - 567/840 simplified gives 27/40
- So, 21/56 + 18/60 = 27/40
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