Subtract 90/63 from 16/45
1st number: 16/45, 2nd number: 1 27/63
16/45 - 90/63 is -338/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
16/45 = 16 × 7/45 × 7 = 112/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
90/63 = 90 × 5/63 × 5 = 450/315 - Subtract the two like fractions:
112/315 - 450/315 = 112 - 450/315 = -338/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/45-90/63 16/90-90/63 48/45-90/63 80/45-90/63