Add 15/45 and 72/63
1st number: 15/45, 2nd number: 1 9/63
15/45 + 72/63 is 31/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
15/45 = 15 × 7/45 × 7 = 105/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
72/63 = 72 × 5/63 × 5 = 360/315 - Add the two like fractions:
105/315 + 360/315 = 105 + 360/315 = 465/315 - 465/315 simplified gives 31/21
- So, 15/45 + 72/63 = 31/21
In mixed form: 110/21
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