Subtract 4/40 from 75/84
75/84 - 4/40 is 111/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
75/84 = 75 × 10/84 × 10 = 750/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
4/40 = 4 × 21/40 × 21 = 84/840 - Subtract the two like fractions:
750/840 - 84/840 = 750 - 84/840 = 666/840 - After reducing the fraction, the answer is 111/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/84-8/40 75/84-4/80 75/84-12/40 75/84-20/40 75/84-28/40