Subtract 30/42 from 56/45
1st number: 1 11/45, 2nd number: 30/42
56/45 - 30/42 is 167/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 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 42 × 15 = 630,
30/42 = 30 × 15/42 × 15 = 450/630 - Subtract the two like fractions:
784/630 - 450/630 = 784 - 450/630 = 334/630 - After reducing the fraction, the answer is 167/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45-60/42 56/90-30/42 56/45-30/84 56/45-90/42