Subtract 3/6 from 72/90
72/90 - 3/6 is 3/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 6 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
72/90 = 72 × 1/90 × 1 = 72/90 - Likewise, for the 2nd fraction, since 6 × 15 = 90,
3/6 = 3 × 15/6 × 15 = 45/90 - Subtract the two like fractions:
72/90 - 45/90 = 72 - 45/90 = 27/90 - After reducing the fraction, the answer is 3/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/90-3/12 72/90-9/6 72/90-3/18 72/90-15/6 72/90-3/30 72/90-21/6 72/90-3/42