Subtract 63/5 from 90/45
1st number: 2 0/45, 2nd number: 12 3/5
90/45 - 63/5 is -53/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 5 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
90/45 = 90 × 1/45 × 1 = 90/45 - Likewise, for the 2nd fraction, since 5 × 9 = 45,
63/5 = 63 × 9/5 × 9 = 567/45 - Subtract the two like fractions:
90/45 - 567/45 = 90 - 567/45 = -477/45 - After reducing the fraction, the answer is -53/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/45-63/10 90/45-63/15 90/45-63/25 90/45-63/35