Subtract 27/48 from 70/90
70/90 - 27/48 is 31/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 48 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
70/90 = 70 × 8/90 × 8 = 560/720 - Likewise, for the 2nd fraction, since 48 × 15 = 720,
27/48 = 27 × 15/48 × 15 = 405/720 - Subtract the two like fractions:
560/720 - 405/720 = 560 - 405/720 = 155/720 - After reducing the fraction, the answer is 31/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90-54/48 70/90-27/96 70/90-81/48