Add 21/15 and 54/63
1st number: 1 6/15, 2nd number: 54/63
21/15 + 54/63 is 79/35.
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,
21/15 = 21 × 21/15 × 21 = 441/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
54/63 = 54 × 5/63 × 5 = 270/315 - Add the two like fractions:
441/315 + 270/315 = 441 + 270/315 = 711/315 - 711/315 simplified gives 79/35
- So, 21/15 + 54/63 = 79/35
In mixed form: 29/35
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