Subtract 4/30 from 28/49
28/49 - 4/30 is 46/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 49 × 30 = 1470,
28/49 = 28 × 30/49 × 30 = 840/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
4/30 = 4 × 49/30 × 49 = 196/1470 - Subtract the two like fractions:
840/1470 - 196/1470 = 840 - 196/1470 = 644/1470 - After reducing the fraction, the answer is 46/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/49-4/30 28/49-8/30 28/98-4/30 28/49-4/60 84/49-4/30 28/49-12/30 28/49-4/90 28/49-20/30 28/49-28/30