Add 70/30 and 42/20
1st number: 2 10/30, 2nd number: 2 2/20
70/30 + 42/20 is 133/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
70/30 = 70 × 2/30 × 2 = 140/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60 - Add the two like fractions:
140/60 + 126/60 = 140 + 126/60 = 266/60 - 266/60 simplified gives 133/30
- So, 70/30 + 42/20 = 133/30
In mixed form: 413/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/30+84/20 70/60+42/20 70/30+42/40 70/90+42/20 70/30+42/60