Subtract 60/18 from 45/63
1st number: 45/63, 2nd number: 3 6/18
45/63 - 60/18 is -55/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
45/63 = 45 × 2/63 × 2 = 90/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
60/18 = 60 × 7/18 × 7 = 420/126 - Subtract the two like fractions:
90/126 - 420/126 = 90 - 420/126 = -330/126 - After reducing the fraction, the answer is -55/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/63-60/18 45/63-60/36 45/63-60/54 45/63-60/90