Subtract 56/70 from 8/45
8/45 - 56/70 is -28/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
8/45 = 8 × 14/45 × 14 = 112/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
56/70 = 56 × 9/70 × 9 = 504/630 - Subtract the two like fractions:
112/630 - 504/630 = 112 - 504/630 = -392/630 - After reducing the fraction, the answer is -28/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/45-56/70 8/90-56/70 24/45-56/70 40/45-56/70 56/45-56/70