Add 21/40 and 42/50
21/40 + 42/50 is 273/200.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 50 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 40 × 5 = 200,
21/40 = 21 × 5/40 × 5 = 105/200 - Likewise, for the 2nd fraction, since 50 × 4 = 200,
42/50 = 42 × 4/50 × 4 = 168/200 - Add the two like fractions:
105/200 + 168/200 = 105 + 168/200 = 273/200 - So, 21/40 + 42/50 = 273/200
In mixed form: 173/200
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