Add 18/42 and 42/35
1st number: 18/42, 2nd number: 1 7/35
18/42 + 42/35 is 57/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
42/35 = 42 × 6/35 × 6 = 252/210 - Add the two like fractions:
90/210 + 252/210 = 90 + 252/210 = 342/210 - 342/210 simplified gives 57/35
- So, 18/42 + 42/35 = 57/35
In mixed form: 122/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42+42/35 18/42+84/35 18/84+42/35 18/42+42/70 54/42+42/35 90/42+42/35