Subtract 84/40 from 48/28
1st number: 1 20/28, 2nd number: 2 4/40
48/28 - 84/40 is -27/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
48/28 = 48 × 10/28 × 10 = 480/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
84/40 = 84 × 7/40 × 7 = 588/280 - Subtract the two like fractions:
480/280 - 588/280 = 480 - 588/280 = -108/280 - After reducing the fraction, the answer is -27/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/28-84/40 48/56-84/40 48/28-84/80 48/84-84/40