Subtract 36/70 from 72/45
1st number: 1 27/45, 2nd number: 36/70
72/45 - 36/70 is 38/35.
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,
72/45 = 72 × 14/45 × 14 = 1008/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
36/70 = 36 × 9/70 × 9 = 324/630 - Subtract the two like fractions:
1008/630 - 324/630 = 1008 - 324/630 = 684/630 - After reducing the fraction, the answer is 38/35
- In mixed form: 13/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/45-72/70 72/90-36/70