Subtract 48/36 from 81/70
1st number: 1 11/70, 2nd number: 1 12/36
81/70 - 48/36 is -37/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 36 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 70 × 18 = 1260,
81/70 = 81 × 18/70 × 18 = 1458/1260 - Likewise, for the 2nd fraction, since 36 × 35 = 1260,
48/36 = 48 × 35/36 × 35 = 1680/1260 - Subtract the two like fractions:
1458/1260 - 1680/1260 = 1458 - 1680/1260 = -222/1260 - After reducing the fraction, the answer is -37/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/70-96/36 81/70-48/72