Subtract 18/4 from 35/81
1st number: 35/81, 2nd number: 4 2/4
35/81 - 18/4 is -659/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 4 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
35/81 = 35 × 4/81 × 4 = 140/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
18/4 = 18 × 81/4 × 81 = 1458/324 - Subtract the two like fractions:
140/324 - 1458/324 = 140 - 1458/324 = -1318/324 - After reducing the fraction, the answer is -659/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/81-18/4 35/81-36/4 35/81-18/8 35/81-54/4 35/81-18/12 35/81-90/4 35/81-18/20 35/81-18/28