Add 72/4 and 35/21
1st number: 18 0/4, 2nd number: 1 14/21
72/4 + 35/21 is 59/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
72/4 = 72 × 21/4 × 21 = 1512/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
35/21 = 35 × 4/21 × 4 = 140/84 - Add the two like fractions:
1512/84 + 140/84 = 1512 + 140/84 = 1652/84 - 1652/84 simplified gives 59/3
- So, 72/4 + 35/21 = 59/3
In mixed form: 192/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/4+70/21 72/8+35/21 72/4+35/42 72/12+35/21 72/4+35/63 72/20+35/21 72/28+35/21