Subtract 7/45 from 30/10
1st number: 3 0/10, 2nd number: 7/45
30/10 - 7/45 is 128/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
30/10 = 30 × 9/10 × 9 = 270/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
7/45 = 7 × 2/45 × 2 = 14/90 - Subtract the two like fractions:
270/90 - 14/90 = 270 - 14/90 = 256/90 - After reducing the fraction, the answer is 128/45
- In mixed form: 238/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/10-7/45 30/10-14/45 30/20-7/45 30/10-7/90 90/10-7/45 30/10-21/45 30/10-35/45 30/50-7/45 30/10-49/45 30/70-7/45