Subtract 50/12 from 70/40
1st number: 1 30/40, 2nd number: 4 2/12
70/40 - 50/12 is -29/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
70/40 = 70 × 3/40 × 3 = 210/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
50/12 = 50 × 10/12 × 10 = 500/120 - Subtract the two like fractions:
210/120 - 500/120 = 210 - 500/120 = -290/120 - After reducing the fraction, the answer is -29/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/80-50/12 70/40-50/24 70/40-50/36 70/40-50/60 70/40-50/84