Subtract 7/35 from 45/72
45/72 - 7/35 is 17/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 35 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
45/72 = 45 × 35/72 × 35 = 1575/2520 - Likewise, for the 2nd fraction, since 35 × 72 = 2520,
7/35 = 7 × 72/35 × 72 = 504/2520 - Subtract the two like fractions:
1575/2520 - 504/2520 = 1575 - 504/2520 = 1071/2520 - After reducing the fraction, the answer is 17/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72-7/35 45/72-14/35 45/72-7/70 45/72-21/35 45/72-49/35