Add 42/7 and 1/20
1st number: 6 0/7, 2nd number: 1/20
42/7 + 1/20 is 121/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
42/7 = 42 × 20/7 × 20 = 840/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
1/20 = 1 × 7/20 × 7 = 7/140 - Add the two like fractions:
840/140 + 7/140 = 840 + 7/140 = 847/140 - 847/140 simplified gives 121/20
- So, 42/7 + 1/20 = 121/20
In mixed form: 61/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7+1/20 42/7+2/20 42/14+1/20 42/7+1/40 42/7+3/20 42/21+1/20 42/7+1/60 42/7+5/20 42/35+1/20 42/7+7/20 42/49+1/20