Add 27/84 and 72/20
1st number: 27/84, 2nd number: 3 12/20
27/84 + 72/20 is 549/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
27/84 = 27 × 5/84 × 5 = 135/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
72/20 = 72 × 21/20 × 21 = 1512/420 - Add the two like fractions:
135/420 + 1512/420 = 135 + 1512/420 = 1647/420 - 1647/420 simplified gives 549/140
- So, 27/84 + 72/20 = 549/140
In mixed form: 3129/140
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