Add 3/15 and 21/56
3/15 + 21/56 is 23/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 15 × 56 = 840,
3/15 = 3 × 56/15 × 56 = 168/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
21/56 = 21 × 15/56 × 15 = 315/840 - Add the two like fractions:
168/840 + 315/840 = 168 + 315/840 = 483/840 - 483/840 simplified gives 23/40
- So, 3/15 + 21/56 = 23/40
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