Subtract 9/48 from 7/70
7/70 - 9/48 is -7/80.
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,
7/70 = 7 × 24/70 × 24 = 168/1680 - Likewise, for the 2nd fraction, since 48 × 35 = 1680,
9/48 = 9 × 35/48 × 35 = 315/1680 - Subtract the two like fractions:
168/1680 - 315/1680 = 168 - 315/1680 = -147/1680 - After reducing the fraction, the answer is -7/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/70-9/48 7/70-18/48 7/70-9/96 21/70-9/48 7/70-27/48 35/70-9/48 7/70-45/48 49/70-9/48 7/70-63/48