Subtract 98/63 from 45/40
1st number: 1 5/40, 2nd number: 1 35/63
45/40 - 98/63 is -31/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
45/40 = 45 × 63/40 × 63 = 2835/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
98/63 = 98 × 40/63 × 40 = 3920/2520 - Subtract the two like fractions:
2835/2520 - 3920/2520 = 2835 - 3920/2520 = -1085/2520 - After reducing the fraction, the answer is -31/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40-98/63 45/80-98/63