Subtract 75/56 from 12/15
1st number: 12/15, 2nd number: 1 19/56
12/15 - 75/56 is -151/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 15 × 56 = 840,
12/15 = 12 × 56/15 × 56 = 672/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
75/56 = 75 × 15/56 × 15 = 1125/840 - Subtract the two like fractions:
672/840 - 1125/840 = 672 - 1125/840 = -453/840 - After reducing the fraction, the answer is -151/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15-75/56 12/30-75/56 36/15-75/56 12/45-75/56 60/15-75/56 12/75-75/56 84/15-75/56