Subtract 28/48 from 30/40
30/40 - 28/48 is 1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 40 × 6 = 240,
30/40 = 30 × 6/40 × 6 = 180/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
28/48 = 28 × 5/48 × 5 = 140/240 - Subtract the two like fractions:
180/240 - 140/240 = 180 - 140/240 = 40/240 - After reducing the fraction, the answer is 1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/40-28/48 30/40-56/48 30/80-28/48 30/40-28/96 90/40-28/48 30/40-84/48