Subtract 40/4 from 70/18
1st number: 3 16/18, 2nd number: 10 0/4
70/18 - 40/4 is -55/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
70/18 = 70 × 2/18 × 2 = 140/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
40/4 = 40 × 9/4 × 9 = 360/36 - Subtract the two like fractions:
140/36 - 360/36 = 140 - 360/36 = -220/36 - After reducing the fraction, the answer is -55/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18-80/4 70/36-40/4 70/18-40/8 70/54-40/4 70/18-40/12 70/90-40/4 70/18-40/20 70/18-40/28