Subtract 90/80 from 24/15
1st number: 1 9/15, 2nd number: 1 10/80
24/15 - 90/80 is 19/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
24/15 = 24 × 16/15 × 16 = 384/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
90/80 = 90 × 3/80 × 3 = 270/240 - Subtract the two like fractions:
384/240 - 270/240 = 384 - 270/240 = 114/240 - After reducing the fraction, the answer is 19/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/15-90/80 24/30-90/80 72/15-90/80 24/45-90/80 24/75-90/80