Subtract 16/9 from 80/42
1st number: 1 38/42, 2nd number: 1 7/9
80/42 - 16/9 is 8/63.
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,
80/42 = 80 × 3/42 × 3 = 240/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
16/9 = 16 × 14/9 × 14 = 224/126 - Subtract the two like fractions:
240/126 - 224/126 = 240 - 224/126 = 16/126 - After reducing the fraction, the answer is 8/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42-32/9 80/84-16/9 80/42-16/18 80/42-48/9 80/42-16/27 80/42-80/9 80/42-16/45 80/42-16/63