Add 15/84 and 9/4
1st number: 15/84, 2nd number: 2 1/4
15/84 + 9/4 is 17/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
15/84 = 15 × 1/84 × 1 = 15/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
9/4 = 9 × 21/4 × 21 = 189/84 - Add the two like fractions:
15/84 + 189/84 = 15 + 189/84 = 204/84 - 204/84 simplified gives 17/7
- So, 15/84 + 9/4 = 17/7
In mixed form: 23/7
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