Subtract 7/45 from 45/70
45/70 - 7/45 is 307/630.
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,
45/70 = 45 × 9/70 × 9 = 405/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
7/45 = 7 × 14/45 × 14 = 98/630 - Subtract the two like fractions:
405/630 - 98/630 = 405 - 98/630 = 307/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70-7/45 45/70-14/45 45/70-7/90 45/70-21/45 45/70-35/45 45/70-49/45