Subtract 7/4 from 40/30
1st number: 1 10/30, 2nd number: 1 3/4
40/30 - 7/4 is -5/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 4 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
40/30 = 40 × 2/30 × 2 = 80/60 - Likewise, for the 2nd fraction, since 4 × 15 = 60,
7/4 = 7 × 15/4 × 15 = 105/60 - Subtract the two like fractions:
80/60 - 105/60 = 80 - 105/60 = -25/60 - After reducing the fraction, the answer is -5/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30-7/4 40/30-14/4 40/60-7/4 40/30-7/8 40/30-21/4 40/90-7/4 40/30-7/12 40/30-35/4 40/30-7/20 40/30-49/4 40/30-7/28