Subtract 4/21 from 4/45
445 - 421 is -32315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 21 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
445 = 4 × 745 × 7 = 28315 - Likewise, for the 2nd fraction, since 21 × 15 = 315,
421 = 4 × 1521 × 15 = 60315 - Subtract the two like fractions:
28315 - 60315 = 28 - 60315 = -32315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/45-4/21 4/45-8/21 4/90-4/21 4/45-4/42 12/45-4/21 4/45-12/21 4/45-4/63 20/45-4/21 4/45-20/21 28/45-4/21 4/45-28/21