Subtract 70/48 from 40/70
1st number: 40/70, 2nd number: 1 22/48
40/70 - 70/48 is -149/168.
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,
40/70 = 40 × 24/70 × 24 = 960/1680 - Likewise, for the 2nd fraction, since 48 × 35 = 1680,
70/48 = 70 × 35/48 × 35 = 2450/1680 - Subtract the two like fractions:
960/1680 - 2450/1680 = 960 - 2450/1680 = -1490/1680 - After reducing the fraction, the answer is -149/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70-70/48 40/70-70/96