Subtract 90/63 from 80/18
1st number: 4 8/18, 2nd number: 1 27/63
80/18 - 90/63 is 190/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
80/18 = 80 × 7/18 × 7 = 560/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
90/63 = 90 × 2/63 × 2 = 180/126 - Subtract the two like fractions:
560/126 - 180/126 = 560 - 180/126 = 380/126 - After reducing the fraction, the answer is 190/63
- In mixed form: 31/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/36-90/63 80/54-90/63 80/90-90/63