Subtract 1/40 from 12/63
12/63 - 1/40 is 139/840.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 40 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 63 × 40 = 2520,
12/63 = 12 × 40/63 × 40 = 480/2520 - Likewise, for the 2nd fraction, since 40 × 63 = 2520,
1/40 = 1 × 63/40 × 63 = 63/2520 - Subtract the two like fractions:
480/2520 - 63/2520 = 480 - 63/2520 = 417/2520 - After reducing the fraction, the answer is 139/840
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/63-1/40 12/63-2/40 12/63-1/80 36/63-1/40 12/63-3/40 60/63-1/40 12/63-5/40 84/63-1/40 12/63-7/40