Add 80/2 and 60/21
1st number: 40 0/2, 2nd number: 2 18/21
80/2 + 60/21 is 300/7.
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,
80/2 = 80 × 21/2 × 21 = 1680/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
60/21 = 60 × 2/21 × 2 = 120/42 - Add the two like fractions:
1680/42 + 120/42 = 1680 + 120/42 = 1800/42 - 1800/42 simplified gives 300/7
- So, 80/2 + 60/21 = 300/7
In mixed form: 426/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/4+60/21 80/2+60/42 80/6+60/21 80/2+60/63 80/10+60/21 80/14+60/21