Add 72/63 and 30/45
1st number: 1 9/63, 2nd number: 30/45
72/63 + 30/45 is 38/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
72/63 = 72 × 5/63 × 5 = 360/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
30/45 = 30 × 7/45 × 7 = 210/315 - Add the two like fractions:
360/315 + 210/315 = 360 + 210/315 = 570/315 - 570/315 simplified gives 38/21
- So, 72/63 + 30/45 = 38/21
In mixed form: 117/21
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