Subtract 72/30 from 1/2
1st number: 1/2, 2nd number: 2 12/30
1/2 - 72/30 is -19/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 2 × 15 = 30,
1/2 = 1 × 15/2 × 15 = 15/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
72/30 = 72 × 1/30 × 1 = 72/30 - Subtract the two like fractions:
15/30 - 72/30 = 15 - 72/30 = -57/30 - After reducing the fraction, the answer is -19/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 1/4-72/30 1/2-72/60 3/2-72/30 1/6-72/30 1/2-72/90 5/2-72/30 1/10-72/30 7/2-72/30 1/14-72/30