Add 42/30 and 10/28
1st number: 1 12/30, 2nd number: 10/28
42/30 + 10/28 is 123/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
42/30 = 42 × 14/30 × 14 = 588/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
10/28 = 10 × 15/28 × 15 = 150/420 - Add the two like fractions:
588/420 + 150/420 = 588 + 150/420 = 738/420 - 738/420 simplified gives 123/70
- So, 42/30 + 10/28 = 123/70
In mixed form: 153/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30+10/28 42/30+20/28 42/60+10/28 42/30+10/56 42/30+30/28 42/90+10/28 42/30+10/84 42/30+50/28 42/30+70/28