Subtract 6/63 from 3/40
3/40 - 6/63 is -17/840.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
3/40 = 3 × 63/40 × 63 = 189/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
6/63 = 6 × 40/63 × 40 = 240/2520 - Subtract the two like fractions:
189/2520 - 240/2520 = 189 - 240/2520 = -51/2520 - After reducing the fraction, the answer is -17/840
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40-6/63 3/40-12/63 3/80-6/63 9/40-6/63 3/40-18/63 15/40-6/63 3/40-30/63 21/40-6/63 3/40-42/63