Add 42/40 and 10/20
1st number: 1 2/40, 2nd number: 10/20
42/40 + 10/20 is 31/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
42/40 = 42 × 1/40 × 1 = 42/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
10/20 = 10 × 2/20 × 2 = 20/40 - Add the two like fractions:
42/40 + 20/40 = 42 + 20/40 = 62/40 - 62/40 simplified gives 31/20
- So, 42/40 + 10/20 = 31/20
In mixed form: 111/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40+10/20 42/80+10/20 42/40+10/40 42/40+30/20 42/40+10/60 42/40+50/20 42/40+70/20