Subtract 15/63 from 2/40
2/40 - 15/63 is -79/420.
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,
2/40 = 2 × 63/40 × 63 = 126/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
15/63 = 15 × 40/63 × 40 = 600/2520 - Subtract the two like fractions:
126/2520 - 600/2520 = 126 - 600/2520 = -474/2520 - After reducing the fraction, the answer is -79/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/40-15/63 2/40-30/63 2/80-15/63 6/40-15/63 2/40-45/63 10/40-15/63 2/40-75/63 14/40-15/63