Subtract 72/30 from 8/4
1st number: 2 0/4, 2nd number: 2 12/30
8/4 - 72/30 is -2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
8/4 = 8 × 15/4 × 15 = 120/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
72/30 = 72 × 2/30 × 2 = 144/60 - Subtract the two like fractions:
120/60 - 144/60 = 120 - 144/60 = -24/60 - After reducing the fraction, the answer is -2/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/4-72/30 8/4-72/60 24/4-72/30 8/12-72/30 8/4-72/90 40/4-72/30 8/20-72/30 56/4-72/30 8/28-72/30