Subtract 2/80 from 72/30
1st number: 2 12/30, 2nd number: 2/80
72/30 - 2/80 is 19/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
72/30 = 72 × 8/30 × 8 = 576/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
2/80 = 2 × 3/80 × 3 = 6/240 - Subtract the two like fractions:
576/240 - 6/240 = 576 - 6/240 = 570/240 - After reducing the fraction, the answer is 19/8
- In mixed form: 23/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30-4/80 72/60-2/80 72/30-6/80 72/90-2/80 72/30-10/80 72/30-14/80