Add 42/63 and 21/15
1st number: 42/63, 2nd number: 1 6/15
42/63 + 21/15 is 31/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 15 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
42/63 = 42 × 5/63 × 5 = 210/315 - Likewise, for the 2nd fraction, since 15 × 21 = 315,
21/15 = 21 × 21/15 × 21 = 441/315 - Add the two like fractions:
210/315 + 441/315 = 210 + 441/315 = 651/315 - 651/315 simplified gives 31/15
- So, 42/63 + 21/15 = 31/15
In mixed form: 21/15
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