Add 7/12 and 21/40
7/12 + 21/40 is 133/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
7/12 = 7 × 10/12 × 10 = 70/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
21/40 = 21 × 3/40 × 3 = 63/120 - Add the two like fractions:
70/120 + 63/120 = 70 + 63/120 = 133/120 - So, 7/12 + 21/40 = 133/120
In mixed form: 113/120
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