Subtract 27/90 from 7/50
7/50 - 27/90 is -4/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
7/50 = 7 × 9/50 × 9 = 63/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
27/90 = 27 × 5/90 × 5 = 135/450 - Subtract the two like fractions:
63/450 - 135/450 = 63 - 135/450 = -72/450 - After reducing the fraction, the answer is -4/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/50-27/90 7/50-54/90 21/50-27/90 7/50-81/90 35/50-27/90 49/50-27/90