Subtract 48/70 from 48/45
1st number: 1 3/45, 2nd number: 48/70
48/45 - 48/70 is 8/21.
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,
48/45 = 48 × 14/45 × 14 = 672/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
48/70 = 48 × 9/70 × 9 = 432/630 - Subtract the two like fractions:
672/630 - 432/630 = 672 - 432/630 = 240/630 - After reducing the fraction, the answer is 8/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/45-48/70 48/45-96/70 48/90-48/70