Subtract 90/48 from 49/20
1st number: 2 9/20, 2nd number: 1 42/48
49/20 - 90/48 is 23/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 20 × 12 = 240,
49/20 = 49 × 12/20 × 12 = 588/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
90/48 = 90 × 5/48 × 5 = 450/240 - Subtract the two like fractions:
588/240 - 450/240 = 588 - 450/240 = 138/240 - After reducing the fraction, the answer is 23/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/20-90/48 49/40-90/48 49/20-90/96 49/60-90/48