Add 12/60 and 72/21
1st number: 12/60, 2nd number: 3 9/21
12/60 + 72/21 is 127/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
12/60 = 12 × 7/60 × 7 = 84/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
72/21 = 72 × 20/21 × 20 = 1440/420 - Add the two like fractions:
84/420 + 1440/420 = 84 + 1440/420 = 1524/420 - 1524/420 simplified gives 127/35
- So, 12/60 + 72/21 = 127/35
In mixed form: 322/35
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