Subtract 70/45 from 54/70
1st number: 54/70, 2nd number: 1 25/45
54/70 - 70/45 is -247/315.
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,
54/70 = 54 × 9/70 × 9 = 486/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
70/45 = 70 × 14/45 × 14 = 980/630 - Subtract the two like fractions:
486/630 - 980/630 = 486 - 980/630 = -494/630 - After reducing the fraction, the answer is -247/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/70-70/90