Add 21/30 and 14/40
21/30 + 14/40 is 21/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
21/30 = 21 × 4/30 × 4 = 84/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
14/40 = 14 × 3/40 × 3 = 42/120 - Add the two like fractions:
84/120 + 42/120 = 84 + 42/120 = 126/120 - 126/120 simplified gives 21/20
- So, 21/30 + 14/40 = 21/20
In mixed form: 11/20
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