Add 40/21 and 45/35
1st number: 1 19/21, 2nd number: 1 10/35
40/21 + 45/35 is 67/21.
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,
45/35 = 45 × 3/35 × 3 = 135/105 - Add the two like fractions:
200/105 + 135/105 = 200 + 135/105 = 335/105 - 335/105 simplified gives 67/21
- So, 40/21 + 45/35 = 67/21
In mixed form: 34/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+45/35 40/21+90/35 40/42+45/35 40/21+45/70 40/63+45/35