Subtract 8/72 from 28/30
28/30 - 8/72 is 37/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 30 × 12 = 360,
28/30 = 28 × 12/30 × 12 = 336/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
8/72 = 8 × 5/72 × 5 = 40/360 - Subtract the two like fractions:
336/360 - 40/360 = 336 - 40/360 = 296/360 - After reducing the fraction, the answer is 37/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30-8/72 28/30-16/72 28/60-8/72 84/30-8/72 28/30-24/72 28/90-8/72 28/30-40/72 28/30-56/72