Subtract 18/30 from 30/4
1st number: 7 2/4, 2nd number: 18/30
30/4 - 18/30 is 69/10.
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,
30/4 = 30 × 15/4 × 15 = 450/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
18/30 = 18 × 2/30 × 2 = 36/60 - Subtract the two like fractions:
450/60 - 36/60 = 450 - 36/60 = 414/60 - After reducing the fraction, the answer is 69/10
- In mixed form: 69/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/4-18/30 30/4-36/30 30/8-18/30 30/4-18/60 90/4-18/30 30/4-54/30 30/12-18/30 30/4-18/90 30/4-90/30 30/20-18/30 30/28-18/30