Subtract 18/48 from 15/70
15/70 - 18/48 is -9/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 48 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 70 × 24 = 1680,
15/70 = 15 × 24/70 × 24 = 360/1680 - Likewise, for the 2nd fraction, since 48 × 35 = 1680,
18/48 = 18 × 35/48 × 35 = 630/1680 - Subtract the two like fractions:
360/1680 - 630/1680 = 360 - 630/1680 = -270/1680 - After reducing the fraction, the answer is -9/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70-18/48 15/70-36/48 15/70-18/96 45/70-18/48 15/70-54/48 75/70-18/48 15/70-90/48