Add 21/60 and 12/40
21/60 + 12/40 is 13/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 60 × 2 = 120,
21/60 = 21 × 2/60 × 2 = 42/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
12/40 = 12 × 3/40 × 3 = 36/120 - Add the two like fractions:
42/120 + 36/120 = 42 + 36/120 = 78/120 - 78/120 simplified gives 13/20
- So, 21/60 + 12/40 = 13/20
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