Subtract 4/60 from 30/70
30/70 - 4/60 is 38/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
30/70 = 30 × 6/70 × 6 = 180/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
4/60 = 4 × 7/60 × 7 = 28/420 - Subtract the two like fractions:
180/420 - 28/420 = 180 - 28/420 = 152/420 - After reducing the fraction, the answer is 38/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70-4/60 30/70-8/60 90/70-4/60 30/70-12/60 30/70-20/60 30/70-28/60