Subtract 3/63 from 12/90
12/90 - 3/63 is 3/35.
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,
12/90 = 12 × 7/90 × 7 = 84/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
3/63 = 3 × 10/63 × 10 = 30/630 - Subtract the two like fractions:
84/630 - 30/630 = 84 - 30/630 = 54/630 - After reducing the fraction, the answer is 3/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90-3/63 12/90-6/63 36/90-3/63 12/90-9/63 60/90-3/63 12/90-15/63 84/90-3/63 12/90-21/63