Add 40/14 and 3/21
1st number: 2 12/14, 2nd number: 3/21
40/14 + 3/21 is 3/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
40/14 = 40 × 3/14 × 3 = 120/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
3/21 = 3 × 2/21 × 2 = 6/42 - Add the two like fractions:
120/42 + 6/42 = 120 + 6/42 = 126/42 - 126/42 simplified gives 3/1
- So, 40/14 + 3/21 = 3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/14+3/21 40/14+6/21 40/28+3/21 40/14+3/42 40/14+9/21 40/42+3/21 40/14+3/63 40/14+15/21 40/70+3/21 40/98+3/21