Subtract 2/40 from 28/63
28/63 - 2/40 is 71/180.
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,
28/63 = 28 × 40/63 × 40 = 1120/2520 - Likewise, for the 2nd fraction, since 40 × 63 = 2520,
2/40 = 2 × 63/40 × 63 = 126/2520 - Subtract the two like fractions:
1120/2520 - 126/2520 = 1120 - 126/2520 = 994/2520 - After reducing the fraction, the answer is 71/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/63-2/40 28/63-4/40 28/63-2/80 84/63-2/40 28/63-6/40 28/63-10/40 28/63-14/40