Add 42/40 and 21/24
1st number: 1 2/40, 2nd number: 21/24
42/40 + 21/24 is 77/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
42/40 = 42 × 3/40 × 3 = 126/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
21/24 = 21 × 5/24 × 5 = 105/120 - Add the two like fractions:
126/120 + 105/120 = 126 + 105/120 = 231/120 - 231/120 simplified gives 77/40
- So, 42/40 + 21/24 = 77/40
In mixed form: 137/40
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