Add 81/4 and 30/7
1st number: 20 1/4, 2nd number: 4 2/7
81/4 + 30/7 is 687/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
81/4 = 81 × 7/4 × 7 = 567/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
30/7 = 30 × 4/7 × 4 = 120/28 - Add the two like fractions:
567/28 + 120/28 = 567 + 120/28 = 687/28 - So, 81/4 + 30/7 = 687/28
In mixed form: 2415/28
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