Subtract 7/10 from 18/4
1st number: 4 2/4, 2nd number: 7/10
18/4 - 7/10 is 19/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
18/4 = 18 × 5/4 × 5 = 90/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
7/10 = 7 × 2/10 × 2 = 14/20 - Subtract the two like fractions:
90/20 - 14/20 = 90 - 14/20 = 76/20 - After reducing the fraction, the answer is 19/5
- In mixed form: 34/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4-7/10 18/4-14/10 18/8-7/10 18/4-7/20 54/4-7/10 18/4-21/10 18/12-7/10 18/4-7/30 90/4-7/10 18/4-35/10 18/20-7/10 18/4-7/50 18/4-49/10 18/28-7/10 18/4-7/70