Subtract 1/30 from 70/18
1st number: 3 16/18, 2nd number: 1/30
70/18 - 1/30 is 347/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
70/18 = 70 × 5/18 × 5 = 350/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
1/30 = 1 × 3/30 × 3 = 3/90 - Subtract the two like fractions:
350/90 - 3/90 = 350 - 3/90 = 347/90 - In mixed form: 377/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18-2/30 70/36-1/30 70/18-1/60 70/18-3/30 70/54-1/30 70/18-1/90 70/18-5/30 70/90-1/30 70/18-7/30