Subtract 7/10 from 49/90
49/90 - 7/10 is -7/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
49/90 = 49 × 1/90 × 1 = 49/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
7/10 = 7 × 9/10 × 9 = 63/90 - Subtract the two like fractions:
49/90 - 63/90 = 49 - 63/90 = -14/90 - After reducing the fraction, the answer is -7/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/90-7/10 49/90-14/10 49/90-7/20 49/90-21/10 49/90-7/30 49/90-35/10 49/90-7/50 49/90-49/10 49/90-7/70