Add 21/56 and 1/40
21/56 + 1/40 is 2/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
1/40 = 1 × 7/40 × 7 = 7/280 - Add the two like fractions:
105/280 + 7/280 = 105 + 7/280 = 112/280 - 112/280 simplified gives 2/5
- So, 21/56 + 1/40 = 2/5
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