Subtract 1/30 from 70/40
1st number: 1 30/40, 2nd number: 1/30
70/40 - 1/30 is 103/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 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 30 × 4 = 120,
1/30 = 1 × 4/30 × 4 = 4/120 - Subtract the two like fractions:
210/120 - 4/120 = 210 - 4/120 = 206/120 - After reducing the fraction, the answer is 103/60
- In mixed form: 143/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40-2/30 70/80-1/30 70/40-1/60 70/40-3/30 70/40-1/90 70/40-5/30 70/40-7/30