Subtract 2/42 from 54/45
1st number: 1 9/45, 2nd number: 2/42
54/45 - 2/42 is 121/105.
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,
54/45 = 54 × 14/45 × 14 = 756/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
2/42 = 2 × 15/42 × 15 = 30/630 - Subtract the two like fractions:
756/630 - 30/630 = 756 - 30/630 = 726/630 - After reducing the fraction, the answer is 121/105
- In mixed form: 116/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/45-4/42 54/90-2/42 54/45-2/84 54/45-6/42 54/45-10/42 54/45-14/42