Add 81/4 and 84/7
1st number: 20 1/4, 2nd number: 12 0/7
81/4 + 84/7 is 129/4.
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,
84/7 = 84 × 4/7 × 4 = 336/28 - Add the two like fractions:
567/28 + 336/28 = 567 + 336/28 = 903/28 - 903/28 simplified gives 129/4
- So, 81/4 + 84/7 = 129/4
In mixed form: 321/4
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