Add 20/15 and 18/63
1st number: 1 5/15, 2nd number: 18/63
20/15 + 18/63 is 34/21.
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,
18/63 = 18 × 5/63 × 5 = 90/315 - Add the two like fractions:
420/315 + 90/315 = 420 + 90/315 = 510/315 - 510/315 simplified gives 34/21
- So, 20/15 + 18/63 = 34/21
In mixed form: 113/21
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