Add 21/15 and 12/63
1st number: 1 6/15, 2nd number: 12/63
21/15 + 12/63 is 167/105.
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,
12/63 = 12 × 5/63 × 5 = 60/315 - Add the two like fractions:
441/315 + 60/315 = 441 + 60/315 = 501/315 - 501/315 simplified gives 167/105
- So, 21/15 + 12/63 = 167/105
In mixed form: 162/105
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