Add 72/18 and 70/16
1st number: 4 0/18, 2nd number: 4 6/16
72/18 + 70/16 is 67/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 18 × 8 = 144,
72/18 = 72 × 8/18 × 8 = 576/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
70/16 = 70 × 9/16 × 9 = 630/144 - Add the two like fractions:
576/144 + 630/144 = 576 + 630/144 = 1206/144 - 1206/144 simplified gives 67/8
- So, 72/18 + 70/16 = 67/8
In mixed form: 83/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/36+70/16 72/18+70/32 72/54+70/16 72/18+70/48 72/90+70/16 72/18+70/80