Subtract 10/18 from 90/63
1st number: 1 27/63, 2nd number: 10/18
90/63 - 10/18 is 55/63.
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,
90/63 = 90 × 2/63 × 2 = 180/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
10/18 = 10 × 7/18 × 7 = 70/126 - Subtract the two like fractions:
180/126 - 70/126 = 180 - 70/126 = 110/126 - After reducing the fraction, the answer is 55/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/63-20/18 90/63-10/36 90/63-30/18 90/63-10/54 90/63-50/18 90/63-10/90 90/63-70/18