Subtract 3/48 from 70/90
70/90 - 3/48 is 103/144.
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,
3/48 = 3 × 15/48 × 15 = 45/720 - Subtract the two like fractions:
560/720 - 45/720 = 560 - 45/720 = 515/720 - After reducing the fraction, the answer is 103/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90-6/48 70/90-3/96 70/90-9/48 70/90-15/48 70/90-21/48