Subtract 30/63 from 6/40
6/40 - 30/63 is -137/420.
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,
6/40 = 6 × 63/40 × 63 = 378/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
30/63 = 30 × 40/63 × 40 = 1200/2520 - Subtract the two like fractions:
378/2520 - 1200/2520 = 378 - 1200/2520 = -822/2520 - After reducing the fraction, the answer is -137/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/40-30/63 6/40-60/63 6/80-30/63 18/40-30/63 6/40-90/63 30/40-30/63 42/40-30/63