Subtract 45/35 from 18/15
1st number: 1 3/15, 2nd number: 1 10/35
18/15 - 45/35 is -3/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
18/15 = 18 × 7/15 × 7 = 126/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
45/35 = 45 × 3/35 × 3 = 135/105 - Subtract the two like fractions:
126/105 - 135/105 = 126 - 135/105 = -9/105 - After reducing the fraction, the answer is -3/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15-45/35 18/15-90/35 18/30-45/35 18/15-45/70 54/15-45/35 18/45-45/35 90/15-45/35 18/75-45/35