Subtract 45/70 from 4/24
4/24 - 45/70 is -10/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 70 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 24 × 35 = 840,
4/24 = 4 × 35/24 × 35 = 140/840 - Likewise, for the 2nd fraction, since 70 × 12 = 840,
45/70 = 45 × 12/70 × 12 = 540/840 - Subtract the two like fractions:
140/840 - 540/840 = 140 - 540/840 = -400/840 - After reducing the fraction, the answer is -10/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/24-45/70 4/24-90/70 4/48-45/70 12/24-45/70 4/72-45/70 20/24-45/70 28/24-45/70