Add 10/40 and 42/10
1st number: 10/40, 2nd number: 4 2/10
10/40 + 42/10 is 89/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
10/40 = 10 × 1/40 × 1 = 10/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
42/10 = 42 × 4/10 × 4 = 168/40 - Add the two like fractions:
10/40 + 168/40 = 10 + 168/40 = 178/40 - 178/40 simplified gives 89/20
- So, 10/40 + 42/10 = 89/20
In mixed form: 49/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+42/10 10/40+84/10 10/80+42/10 10/40+42/20 30/40+42/10 10/40+42/30 50/40+42/10 10/40+42/50 70/40+42/10 10/40+42/70