Add 21/56 and 3/60
21/56 + 3/60 is 17/40.
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,
3/60 = 3 × 14/60 × 14 = 42/840 - Add the two like fractions:
315/840 + 42/840 = 315 + 42/840 = 357/840 - 357/840 simplified gives 17/40
- So, 21/56 + 3/60 = 17/40
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