Subtract 18/25 from 3/84
3/84 - 18/25 is -479/700.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 25 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
3/84 = 3 × 25/84 × 25 = 75/2100 - Likewise, for the 2nd fraction, since 25 × 84 = 2100,
18/25 = 18 × 84/25 × 84 = 1512/2100 - Subtract the two like fractions:
75/2100 - 1512/2100 = 75 - 1512/2100 = -1437/2100 - After reducing the fraction, the answer is -479/700
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/84-18/25 3/84-36/25 3/84-18/50 9/84-18/25 3/84-54/25 3/84-18/75 15/84-18/25 3/84-90/25 21/84-18/25