Subtract 42/49 from 4/30
4/30 - 42/49 is -76/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 49 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 30 × 49 = 1470,
4/30 = 4 × 49/30 × 49 = 196/1470 - Likewise, for the 2nd fraction, since 49 × 30 = 1470,
42/49 = 42 × 30/49 × 30 = 1260/1470 - Subtract the two like fractions:
196/1470 - 1260/1470 = 196 - 1260/1470 = -1064/1470 - After reducing the fraction, the answer is -76/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30-42/49 4/30-84/49 4/60-42/49 4/30-42/98 12/30-42/49 4/90-42/49 20/30-42/49 28/30-42/49