Add 40/21 and 2/18
1st number: 1 19/21, 2nd number: 2/18
40/21 + 2/18 is 127/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
40/21 = 40 × 6/21 × 6 = 240/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
2/18 = 2 × 7/18 × 7 = 14/126 - Add the two like fractions:
240/126 + 14/126 = 240 + 14/126 = 254/126 - 254/126 simplified gives 127/63
- So, 40/21 + 2/18 = 127/63
In mixed form: 21/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+2/18 40/21+4/18 40/42+2/18 40/21+2/36 40/21+6/18 40/63+2/18 40/21+2/54 40/21+10/18 40/21+2/90 40/21+14/18