Subtract 54/98 from 40/20
1st number: 2 0/20, 2nd number: 54/98
40/20 - 54/98 is 71/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 98 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
40/20 = 40 × 49/20 × 49 = 1960/980 - Likewise, for the 2nd fraction, since 98 × 10 = 980,
54/98 = 54 × 10/98 × 10 = 540/980 - Subtract the two like fractions:
1960/980 - 540/980 = 1960 - 540/980 = 1420/980 - After reducing the fraction, the answer is 71/49
- In mixed form: 122/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/20-54/98 40/60-54/98