Subtract 18/30 from 4/56
4/56 - 18/30 is -37/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 30 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
4/56 = 4 × 15/56 × 15 = 60/840 - Likewise, for the 2nd fraction, since 30 × 28 = 840,
18/30 = 18 × 28/30 × 28 = 504/840 - Subtract the two like fractions:
60/840 - 504/840 = 60 - 504/840 = -444/840 - After reducing the fraction, the answer is -37/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/56-18/30 4/56-36/30 4/56-18/60 12/56-18/30 4/56-54/30 4/56-18/90 20/56-18/30 4/56-90/30 28/56-18/30