Subtract 56/18 from 36/42
1st number: 36/42, 2nd number: 3 2/18
36/42 - 56/18 is -142/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
36/42 = 36 × 3/42 × 3 = 108/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
56/18 = 56 × 7/18 × 7 = 392/126 - Subtract the two like fractions:
108/126 - 392/126 = 108 - 392/126 = -284/126 - After reducing the fraction, the answer is -142/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/42-56/18 36/84-56/18 36/42-56/36 36/42-56/54 36/42-56/90