Subtract 45/70 from 3/5
3/5 - 45/70 is -3/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
3/5 = 3 × 14/5 × 14 = 42/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
45/70 = 45 × 1/70 × 1 = 45/70 - Subtract the two like fractions:
42/70 - 45/70 = 42 - 45/70 = -3/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/5-45/70 3/5-90/70 3/10-45/70 9/5-45/70 3/15-45/70 15/5-45/70 3/25-45/70 21/5-45/70 3/35-45/70