Add 72/2 and 1/21
1st number: 36 0/2, 2nd number: 1/21
72/2 + 1/21 is 757/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
72/2 = 72 × 21/2 × 21 = 1512/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
1/21 = 1 × 2/21 × 2 = 2/42 - Add the two like fractions:
1512/42 + 2/42 = 1512 + 2/42 = 1514/42 - 1514/42 simplified gives 757/21
- So, 72/2 + 1/21 = 757/21
In mixed form: 361/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/2+2/21 72/4+1/21 72/2+1/42 72/2+3/21 72/6+1/21 72/2+1/63 72/2+5/21 72/10+1/21 72/2+7/21 72/14+1/21