Add 70/10 and 42/20
1st number: 7 0/10, 2nd number: 2 2/20
70/10 + 42/20 is 91/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
70/10 = 70 × 2/10 × 2 = 140/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
42/20 = 42 × 1/20 × 1 = 42/20 - Add the two like fractions:
140/20 + 42/20 = 140 + 42/20 = 182/20 - 182/20 simplified gives 91/10
- So, 70/10 + 42/20 = 91/10
In mixed form: 91/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/10+84/20 70/20+42/20 70/10+42/40 70/30+42/20 70/10+42/60 70/50+42/20