Subtract 45/70 from 8/9
8/9 - 45/70 is 31/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 9 × 70 = 630,
8/9 = 8 × 70/9 × 70 = 560/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
45/70 = 45 × 9/70 × 9 = 405/630 - Subtract the two like fractions:
560/630 - 405/630 = 560 - 405/630 = 155/630 - After reducing the fraction, the answer is 31/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/9-45/70 8/9-90/70 8/18-45/70 24/9-45/70 8/27-45/70 40/9-45/70 8/45-45/70 56/9-45/70 8/63-45/70