Subtract 42/30 from 70/10
1st number: 7 0/10, 2nd number: 1 12/30
70/10 - 42/30 is 28/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
70/10 = 70 × 3/10 × 3 = 210/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
42/30 = 42 × 1/30 × 1 = 42/30 - Subtract the two like fractions:
210/30 - 42/30 = 210 - 42/30 = 168/30 - After reducing the fraction, the answer is 28/5
- In mixed form: 53/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/10-84/30 70/20-42/30 70/10-42/60 70/30-42/30 70/10-42/90 70/50-42/30