Add 42/10 and 18/28
1st number: 4 2/10, 2nd number: 18/28
42/10 + 18/28 is 339/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 10 × 14 = 140,
42/10 = 42 × 14/10 × 14 = 588/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
18/28 = 18 × 5/28 × 5 = 90/140 - Add the two like fractions:
588/140 + 90/140 = 588 + 90/140 = 678/140 - 678/140 simplified gives 339/70
- So, 42/10 + 18/28 = 339/70
In mixed form: 459/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10+18/28 42/10+36/28 42/20+18/28 42/10+18/56 42/10+54/28 42/30+18/28 42/10+18/84 42/10+90/28 42/50+18/28 42/70+18/28