Add 42/10 and 7/28
1st number: 4 2/10, 2nd number: 7/28
42/10 + 7/28 is 89/20.
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,
7/28 = 7 × 5/28 × 5 = 35/140 - Add the two like fractions:
588/140 + 35/140 = 588 + 35/140 = 623/140 - 623/140 simplified gives 89/20
- So, 42/10 + 7/28 = 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: 84/10+7/28 42/10+14/28 42/20+7/28 42/10+7/56 42/10+21/28 42/30+7/28 42/10+7/84 42/10+35/28 42/50+7/28 42/10+49/28 42/70+7/28