Add 21/20 and 42/56
1st number: 1 1/20, 2nd number: 42/56
21/20 + 42/56 is 9/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
21/20 = 21 × 14/20 × 14 = 294/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
42/56 = 42 × 5/56 × 5 = 210/280 - Add the two like fractions:
294/280 + 210/280 = 294 + 210/280 = 504/280 - 504/280 simplified gives 9/5
- So, 21/20 + 42/56 = 9/5
In mixed form: 14/5
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