Subtract 5/63 from 28/90
28/90 - 5/63 is 73/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
28/90 = 28 × 7/90 × 7 = 196/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
5/63 = 5 × 10/63 × 10 = 50/630 - Subtract the two like fractions:
196/630 - 50/630 = 196 - 50/630 = 146/630 - After reducing the fraction, the answer is 73/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90-5/63 28/90-10/63 84/90-5/63 28/90-15/63 28/90-25/63 28/90-35/63