Subtract 18/70 from 4/18
4/18 - 18/70 is -11/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
4/18 = 4 × 35/18 × 35 = 140/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
18/70 = 18 × 9/70 × 9 = 162/630 - Subtract the two like fractions:
140/630 - 162/630 = 140 - 162/630 = -22/630 - After reducing the fraction, the answer is -11/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/18-18/70 4/18-36/70 4/36-18/70 12/18-18/70 4/18-54/70 4/54-18/70 20/18-18/70 4/18-90/70 4/90-18/70 28/18-18/70