Add 4/54 and 8/21
4/54 + 8/21 is 86/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
4/54 = 4 × 7/54 × 7 = 28/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
8/21 = 8 × 18/21 × 18 = 144/378 - Add the two like fractions:
28/378 + 144/378 = 28 + 144/378 = 172/378 - 172/378 simplified gives 86/189
- So, 4/54 + 8/21 = 86/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/54+8/21 4/54+16/21 4/54+8/42 12/54+8/21 4/54+24/21 4/54+8/63 20/54+8/21 4/54+40/21 28/54+8/21 4/54+56/21