Add 20/15 and 84/63
1st number: 1 5/15, 2nd number: 1 21/63
20/15 + 84/63 is 8/3.
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,
20/15 = 20 × 21/15 × 21 = 420/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
84/63 = 84 × 5/63 × 5 = 420/315 - Add the two like fractions:
420/315 + 420/315 = 420 + 420/315 = 840/315 - 840/315 simplified gives 8/3
- So, 20/15 + 84/63 = 8/3
In mixed form: 22/3
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