Subtract 36/45 from 72/70
1st number: 1 2/70, 2nd number: 36/45
72/70 - 36/45 is 8/35.
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,
72/70 = 72 × 9/70 × 9 = 648/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
36/45 = 36 × 14/45 × 14 = 504/630 - Subtract the two like fractions:
648/630 - 504/630 = 648 - 504/630 = 144/630 - After reducing the fraction, the answer is 8/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/70-72/45 72/70-36/90