Subtract 42/56 from 35/49
35/49 - 42/56 is -1/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 56 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 49 × 8 = 392,
35/49 = 35 × 8/49 × 8 = 280/392 - Likewise, for the 2nd fraction, since 56 × 7 = 392,
42/56 = 42 × 7/56 × 7 = 294/392 - Subtract the two like fractions:
280/392 - 294/392 = 280 - 294/392 = -14/392 - After reducing the fraction, the answer is -1/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/49-42/56 35/49-84/56 35/98-42/56