Add 1/20 and 42/35
1st number: 1/20, 2nd number: 1 7/35
1/20 + 42/35 is 5/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
1/20 = 1 × 7/20 × 7 = 7/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
42/35 = 42 × 4/35 × 4 = 168/140 - Add the two like fractions:
7/140 + 168/140 = 7 + 168/140 = 175/140 - 175/140 simplified gives 5/4
- So, 1/20 + 42/35 = 5/4
In mixed form: 11/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20+42/35 1/20+84/35 1/40+42/35 1/20+42/70 3/20+42/35 1/60+42/35 5/20+42/35 7/20+42/35