Add 54/63 and 40/15
1st number: 54/63, 2nd number: 2 10/15
54/63 + 40/15 is 74/21.
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,
54/63 = 54 × 5/63 × 5 = 270/315 - Likewise, for the 2nd fraction, since 15 × 21 = 315,
40/15 = 40 × 21/15 × 21 = 840/315 - Add the two like fractions:
270/315 + 840/315 = 270 + 840/315 = 1110/315 - 1110/315 simplified gives 74/21
- So, 54/63 + 40/15 = 74/21
In mixed form: 311/21
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