Add 21/36 and 42/60
21/36 + 42/60 is 77/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
42/60 = 42 × 3/60 × 3 = 126/180 - Add the two like fractions:
105/180 + 126/180 = 105 + 126/180 = 231/180 - 231/180 simplified gives 77/60
- So, 21/36 + 42/60 = 77/60
In mixed form: 117/60
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