Add 28/10 and 30/42
1st number: 2 8/10, 2nd number: 30/42
28/10 + 30/42 is 123/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
28/10 = 28 × 21/10 × 21 = 588/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
30/42 = 30 × 5/42 × 5 = 150/210 - Add the two like fractions:
588/210 + 150/210 = 588 + 150/210 = 738/210 - 738/210 simplified gives 123/35
- So, 28/10 + 30/42 = 123/35
In mixed form: 318/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10+30/42 28/10+60/42 28/20+30/42 28/10+30/84 84/10+30/42 28/10+90/42 28/30+30/42 28/50+30/42 28/70+30/42