Add 63/28 and 81/40
1st number: 2 7/28, 2nd number: 2 1/40
63/28 + 81/40 is 171/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
63/28 = 63 × 10/28 × 10 = 630/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
81/40 = 81 × 7/40 × 7 = 567/280 - Add the two like fractions:
630/280 + 567/280 = 630 + 567/280 = 1197/280 - 1197/280 simplified gives 171/40
- So, 63/28 + 81/40 = 171/40
In mixed form: 411/40
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