Add 81/21 and 6/4
1st number: 3 18/21, 2nd number: 1 2/4
81/21 + 6/4 is 75/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
81/21 = 81 × 4/21 × 4 = 324/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
6/4 = 6 × 21/4 × 21 = 126/84 - Add the two like fractions:
324/84 + 126/84 = 324 + 126/84 = 450/84 - 450/84 simplified gives 75/14
- So, 81/21 + 6/4 = 75/14
In mixed form: 55/14
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