Add 40/21 and 12/35
1st number: 1 19/21, 2nd number: 12/35
40/21 + 12/35 is 236/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
40/21 = 40 × 5/21 × 5 = 200/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
12/35 = 12 × 3/35 × 3 = 36/105 - Add the two like fractions:
200/105 + 36/105 = 200 + 36/105 = 236/105 - So, 40/21 + 12/35 = 236/105
In mixed form: 226/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+12/35 40/21+24/35 40/42+12/35 40/21+12/70 40/21+36/35 40/63+12/35 40/21+60/35 40/21+84/35