Add 72/35 and 80/45
1st number: 2 2/35, 2nd number: 1 35/45
72/35 + 80/45 is 1208/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 35 × 9 = 315,
72/35 = 72 × 9/35 × 9 = 648/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
80/45 = 80 × 7/45 × 7 = 560/315 - Add the two like fractions:
648/315 + 560/315 = 648 + 560/315 = 1208/315 - So, 72/35 + 80/45 = 1208/315
In mixed form: 3263/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/70+80/45 72/35+80/90