Add 70/45 and 72/16
1st number: 1 25/45, 2nd number: 4 8/16
70/45 + 72/16 is 109/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
70/45 = 70 × 16/45 × 16 = 1120/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
72/16 = 72 × 45/16 × 45 = 3240/720 - Add the two like fractions:
1120/720 + 3240/720 = 1120 + 3240/720 = 4360/720 - 4360/720 simplified gives 109/18
- So, 70/45 + 72/16 = 109/18
In mixed form: 61/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90+72/16 70/45+72/32 70/45+72/48 70/45+72/80