Subtract 7/45 from 21/10
1st number: 2 1/10, 2nd number: 7/45
2110 - 745 is 3518.
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,
2110 = 21 × 910 × 9 = 18990 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
745 = 7 × 245 × 2 = 1490 - Subtract the two like fractions:
18990 - 1490 = 189 - 1490 = 17590 - After reducing the fraction, the answer is 3518
- In mixed form: 11718
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10-7/45 21/10-14/45 21/20-7/45 21/10-7/90 63/10-7/45 21/10-21/45 21/30-7/45 21/10-35/45 21/50-7/45 21/10-49/45 21/70-7/45