Add 40/2 and 60/21
1st number: 20 0/2, 2nd number: 2 18/21
40/2 + 60/21 is 160/7.
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,
40/2 = 40 × 21/2 × 21 = 840/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
60/21 = 60 × 2/21 × 2 = 120/42 - Add the two like fractions:
840/42 + 120/42 = 840 + 120/42 = 960/42 - 960/42 simplified gives 160/7
- So, 40/2 + 60/21 = 160/7
In mixed form: 226/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/2+60/21 40/4+60/21 40/2+60/42 40/6+60/21 40/2+60/63 40/10+60/21 40/14+60/21