Add 81/45 and 72/63
1st number: 1 36/45, 2nd number: 1 9/63
81/45 + 72/63 is 103/35.
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,
81/45 = 81 × 7/45 × 7 = 567/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
72/63 = 72 × 5/63 × 5 = 360/315 - Add the two like fractions:
567/315 + 360/315 = 567 + 360/315 = 927/315 - 927/315 simplified gives 103/35
- So, 81/45 + 72/63 = 103/35
In mixed form: 233/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/90+72/63