Subtract 40/70 from 56/45
1st number: 1 11/45, 2nd number: 40/70
56/45 - 40/70 is 212/315.
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,
56/45 = 56 × 14/45 × 14 = 784/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
40/70 = 40 × 9/70 × 9 = 360/630 - Subtract the two like fractions:
784/630 - 360/630 = 784 - 360/630 = 424/630 - After reducing the fraction, the answer is 212/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45-80/70 56/90-40/70