Add 28/15 and 84/63
1st number: 1 13/15, 2nd number: 1 21/63
28/15 + 84/63 is 16/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 15 × 21 = 315,
28/15 = 28 × 21/15 × 21 = 588/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
84/63 = 84 × 5/63 × 5 = 420/315 - Add the two like fractions:
588/315 + 420/315 = 588 + 420/315 = 1008/315 - 1008/315 simplified gives 16/5
- So, 28/15 + 84/63 = 16/5
In mixed form: 31/5
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