Subtract 45/70 from 25/45
25/45 - 45/70 is -11/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
25/45 = 25 × 14/45 × 14 = 350/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
45/70 = 45 × 9/70 × 9 = 405/630 - Subtract the two like fractions:
350/630 - 405/630 = 350 - 405/630 = -55/630 - After reducing the fraction, the answer is -11/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/45-45/70 25/45-90/70 25/90-45/70 75/45-45/70