Add 30/28 and 81/42
1st number: 1 2/28, 2nd number: 1 39/42
30/28 + 81/42 is 3/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
30/28 = 30 × 3/28 × 3 = 90/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
81/42 = 81 × 2/42 × 2 = 162/84 - Add the two like fractions:
90/84 + 162/84 = 90 + 162/84 = 252/84 - 252/84 simplified gives 3/1
- So, 30/28 + 81/42 = 3/1
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