Subtract 15/80 from 90/49
1st number: 1 41/49, 2nd number: 15/80
90/49 - 15/80 is 1293/784.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 49 × 80 = 3920,
90/49 = 90 × 80/49 × 80 = 7200/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
15/80 = 15 × 49/80 × 49 = 735/3920 - Subtract the two like fractions:
7200/3920 - 735/3920 = 7200 - 735/3920 = 6465/3920 - After reducing the fraction, the answer is 1293/784
- In mixed form: 1509/784
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/49-30/80 90/98-15/80 90/49-45/80 90/49-75/80