Add 28/42 and 21/60
28/42 + 21/60 is 61/60.
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,
28/42 = 28 × 10/42 × 10 = 280/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
21/60 = 21 × 7/60 × 7 = 147/420 - Add the two like fractions:
280/420 + 147/420 = 280 + 147/420 = 427/420 - 427/420 simplified gives 61/60
- So, 28/42 + 21/60 = 61/60
In mixed form: 11/60
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