Subtract 42/8 from 45/49
1st number: 45/49, 2nd number: 5 2/8
45/49 - 42/8 is -849/196.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 8 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 49 × 8 = 392,
45/49 = 45 × 8/49 × 8 = 360/392 - Likewise, for the 2nd fraction, since 8 × 49 = 392,
42/8 = 42 × 49/8 × 49 = 2058/392 - Subtract the two like fractions:
360/392 - 2058/392 = 360 - 2058/392 = -1698/392 - After reducing the fraction, the answer is -849/196
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/49-42/8 45/49-84/8 45/98-42/8 45/49-42/16 45/49-42/24 45/49-42/40 45/49-42/56