Subtract 30/90 from 10/49
10/49 - 30/90 is -19/147.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 90 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 49 × 90 = 4410,
10/49 = 10 × 90/49 × 90 = 900/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
30/90 = 30 × 49/90 × 49 = 1470/4410 - Subtract the two like fractions:
900/4410 - 1470/4410 = 900 - 1470/4410 = -570/4410 - After reducing the fraction, the answer is -19/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/49-30/90 10/49-60/90 10/98-30/90 30/49-30/90 50/49-30/90 70/49-30/90