Subtract 45/21 from 3/4
1st number: 3/4, 2nd number: 2 3/21
34 - 4521 is -3928.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
34 = 3 × 214 × 21 = 6384 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
4521 = 45 × 421 × 4 = 18084 - Subtract the two like fractions:
6384 - 18084 = 63 - 18084 = -11784 - After reducing the fraction, the answer is -3928
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/4-45/21 3/4-90/21 3/8-45/21 3/4-45/42 9/4-45/21 3/12-45/21 3/4-45/63 15/4-45/21 3/20-45/21 21/4-45/21 3/28-45/21