Add 21/60 and 3/42
21/60 + 3/42 is 59/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
21/60 = 21 × 7/60 × 7 = 147/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
3/42 = 3 × 10/42 × 10 = 30/420 - Add the two like fractions:
147/420 + 30/420 = 147 + 30/420 = 177/420 - 177/420 simplified gives 59/140
- So, 21/60 + 3/42 = 59/140
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