Subtract 42/63 from 4/49
4/49 - 42/63 is -86/147.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 63 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 49 × 9 = 441,
4/49 = 4 × 9/49 × 9 = 36/441 - Likewise, for the 2nd fraction, since 63 × 7 = 441,
42/63 = 42 × 7/63 × 7 = 294/441 - Subtract the two like fractions:
36/441 - 294/441 = 36 - 294/441 = -258/441 - After reducing the fraction, the answer is -86/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/49-42/63 4/49-84/63 4/98-42/63 12/49-42/63 20/49-42/63 28/49-42/63