Subtract 18/45 from 75/70
1st number: 1 5/70, 2nd number: 18/45
75/70 - 18/45 is 47/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
75/70 = 75 × 9/70 × 9 = 675/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
18/45 = 18 × 14/45 × 14 = 252/630 - Subtract the two like fractions:
675/630 - 252/630 = 675 - 252/630 = 423/630 - After reducing the fraction, the answer is 47/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/70-36/45 75/70-18/90 75/70-54/45 75/70-90/45