Subtract 9/7 from 10/45
1st number: 10/45, 2nd number: 1 2/7
10/45 - 9/7 is -67/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
10/45 = 10 × 7/45 × 7 = 70/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
9/7 = 9 × 45/7 × 45 = 405/315 - Subtract the two like fractions:
70/315 - 405/315 = 70 - 405/315 = -335/315 - After reducing the fraction, the answer is -67/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/45-9/7 10/45-18/7 10/90-9/7 10/45-9/14 30/45-9/7 10/45-27/7 10/45-9/21 50/45-9/7 10/45-45/7 10/45-9/35 70/45-9/7 10/45-63/7 10/45-9/49