Add 15/63 and 42/49
15/63 + 42/49 is 23/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 49 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 63 × 7 = 441,
15/63 = 15 × 7/63 × 7 = 105/441 - Likewise, for the 2nd fraction, since 49 × 9 = 441,
42/49 = 42 × 9/49 × 9 = 378/441 - Add the two like fractions:
105/441 + 378/441 = 105 + 378/441 = 483/441 - 483/441 simplified gives 23/21
- So, 15/63 + 42/49 = 23/21
In mixed form: 12/21
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