Add 45/21 and 18/35
1st number: 2 3/21, 2nd number: 18/35
45/21 + 18/35 is 93/35.
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,
45/21 = 45 × 5/21 × 5 = 225/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
18/35 = 18 × 3/35 × 3 = 54/105 - Add the two like fractions:
225/105 + 54/105 = 225 + 54/105 = 279/105 - 279/105 simplified gives 93/35
- So, 45/21 + 18/35 = 93/35
In mixed form: 223/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21+18/35 45/21+36/35 45/42+18/35 45/21+18/70 45/21+54/35 45/63+18/35 45/21+90/35