Subtract 45/35 from 54/72
1st number: 54/72, 2nd number: 1 10/35
54/72 - 45/35 is -15/28.
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,
54/72 = 54 × 35/72 × 35 = 1890/2520 - Likewise, for the 2nd fraction, since 35 × 72 = 2520,
45/35 = 45 × 72/35 × 72 = 3240/2520 - Subtract the two like fractions:
1890/2520 - 3240/2520 = 1890 - 3240/2520 = -1350/2520 - After reducing the fraction, the answer is -15/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/72-90/35 54/72-45/70