Subtract 3/18 from 70/75
70/75 - 3/18 is 23/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
70/75 = 70 × 6/75 × 6 = 420/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
3/18 = 3 × 25/18 × 25 = 75/450 - Subtract the two like fractions:
420/450 - 75/450 = 420 - 75/450 = 345/450 - After reducing the fraction, the answer is 23/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/75-6/18 70/75-3/36 70/75-9/18 70/75-3/54 70/75-15/18 70/75-3/90 70/75-21/18