Subtract 42/15 from 36/56
1st number: 36/56, 2nd number: 2 12/15
36/56 - 42/15 is -151/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 15 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
36/56 = 36 × 15/56 × 15 = 540/840 - Likewise, for the 2nd fraction, since 15 × 56 = 840,
42/15 = 42 × 56/15 × 56 = 2352/840 - Subtract the two like fractions:
540/840 - 2352/840 = 540 - 2352/840 = -1812/840 - After reducing the fraction, the answer is -151/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/56-42/15 36/56-84/15 36/56-42/30 36/56-42/45 36/56-42/75