Subtract 10/54 from 40/70
40/70 - 10/54 is 73/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 54 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
40/70 = 40 × 27/70 × 27 = 1080/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
10/54 = 10 × 35/54 × 35 = 350/1890 - Subtract the two like fractions:
1080/1890 - 350/1890 = 1080 - 350/1890 = 730/1890 - After reducing the fraction, the answer is 73/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70-10/54 40/70-20/54 40/70-30/54 40/70-50/54 40/70-70/54