Add 25/21 and 40/35
1st number: 1 4/21, 2nd number: 1 5/35
25/21 + 40/35 is 7/3.
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,
25/21 = 25 × 5/21 × 5 = 125/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
40/35 = 40 × 3/35 × 3 = 120/105 - Add the two like fractions:
125/105 + 120/105 = 125 + 120/105 = 245/105 - 245/105 simplified gives 7/3
- So, 25/21 + 40/35 = 7/3
In mixed form: 21/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21+40/35 25/21+80/35 25/42+40/35 25/21+40/70 75/21+40/35 25/63+40/35