Add 21/42 and 9/60
21/42 + 9/60 is 13/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
21/42 = 21 × 10/42 × 10 = 210/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
9/60 = 9 × 7/60 × 7 = 63/420 - Add the two like fractions:
210/420 + 63/420 = 210 + 63/420 = 273/420 - 273/420 simplified gives 13/20
- So, 21/42 + 9/60 = 13/20
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