Subtract 8/9 from 54/42
1st number: 1 12/42, 2nd number: 8/9
54/42 - 8/9 is 25/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
54/42 = 54 × 3/42 × 3 = 162/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
8/9 = 8 × 14/9 × 14 = 112/126 - Subtract the two like fractions:
162/126 - 112/126 = 162 - 112/126 = 50/126 - After reducing the fraction, the answer is 25/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-16/9 54/84-8/9 54/42-8/18 54/42-24/9 54/42-8/27 54/42-40/9 54/42-8/45 54/42-56/9 54/42-8/63