Subtract 15/35 from 3/45
3/45 - 15/35 is -38/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 35 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
3/45 = 3 × 7/45 × 7 = 21/315 - Likewise, for the 2nd fraction, since 35 × 9 = 315,
15/35 = 15 × 9/35 × 9 = 135/315 - Subtract the two like fractions:
21/315 - 135/315 = 21 - 135/315 = -114/315 - After reducing the fraction, the answer is -38/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/45-15/35 3/45-30/35 3/90-15/35 3/45-15/70 9/45-15/35 3/45-45/35 15/45-15/35 3/45-75/35 21/45-15/35