Subtract 54/45 from 10/42
1st number: 10/42, 2nd number: 1 9/45
10/42 - 54/45 is -101/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
10/42 = 10 × 15/42 × 15 = 150/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
54/45 = 54 × 14/45 × 14 = 756/630 - Subtract the two like fractions:
150/630 - 756/630 = 150 - 756/630 = -606/630 - After reducing the fraction, the answer is -101/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42-54/45 10/84-54/45 10/42-54/90 30/42-54/45 50/42-54/45 70/42-54/45