Subtract 70/30 from 12/10
1st number: 1 2/10, 2nd number: 2 10/30
12/10 - 70/30 is -17/15.
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,
12/10 = 12 × 3/10 × 3 = 36/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
70/30 = 70 × 1/30 × 1 = 70/30 - Subtract the two like fractions:
36/30 - 70/30 = 36 - 70/30 = -34/30 - After reducing the fraction, the answer is -17/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/10-70/30 12/20-70/30 12/10-70/60 36/10-70/30 12/30-70/30 12/10-70/90 60/10-70/30 12/50-70/30 84/10-70/30 12/70-70/30