Subtract 70/18 from 48/40
1st number: 1 8/40, 2nd number: 3 16/18
48/40 - 70/18 is -121/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
48/40 = 48 × 9/40 × 9 = 432/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
70/18 = 70 × 20/18 × 20 = 1400/360 - Subtract the two like fractions:
432/360 - 1400/360 = 432 - 1400/360 = -968/360 - After reducing the fraction, the answer is -121/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/40-70/18 48/80-70/18 48/40-70/36 48/40-70/54 48/40-70/90