Subtract 2/72 from 90/30
1st number: 3 0/30, 2nd number: 2/72
90/30 - 2/72 is 107/36.
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,
90/30 = 90 × 12/30 × 12 = 1080/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
2/72 = 2 × 5/72 × 5 = 10/360 - Subtract the two like fractions:
1080/360 - 10/360 = 1080 - 10/360 = 1070/360 - After reducing the fraction, the answer is 107/36
- In mixed form: 235/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30-4/72 90/60-2/72 90/30-6/72 90/30-10/72 90/30-14/72