Subtract 36/56 from 18/30
18/30 - 36/56 is -3/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 30 × 28 = 840,
18/30 = 18 × 28/30 × 28 = 504/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
36/56 = 36 × 15/56 × 15 = 540/840 - Subtract the two like fractions:
504/840 - 540/840 = 504 - 540/840 = -36/840 - After reducing the fraction, the answer is -3/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30-36/56 18/30-72/56 18/60-36/56 54/30-36/56 18/90-36/56 90/30-36/56