Subtract 81/35 from 40/18
1st number: 2 4/18, 2nd number: 2 11/35
40/18 - 81/35 is -29/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 35 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
40/18 = 40 × 35/18 × 35 = 1400/630 - Likewise, for the 2nd fraction, since 35 × 18 = 630,
81/35 = 81 × 18/35 × 18 = 1458/630 - Subtract the two like fractions:
1400/630 - 1458/630 = 1400 - 1458/630 = -58/630 - After reducing the fraction, the answer is -29/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18-81/35 40/36-81/35 40/18-81/70 40/54-81/35 40/90-81/35