Subtract 48/81 from 12/56
12/56 - 48/81 is -143/378.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 81 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 56 × 81 = 4536,
12/56 = 12 × 81/56 × 81 = 972/4536 - Likewise, for the 2nd fraction, since 81 × 56 = 4536,
48/81 = 48 × 56/81 × 56 = 2688/4536 - Subtract the two like fractions:
972/4536 - 2688/4536 = 972 - 2688/4536 = -1716/4536 - After reducing the fraction, the answer is -143/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/56-48/81 12/56-96/81 36/56-48/81 60/56-48/81 84/56-48/81