Add 16/21 and 8/54
16/21 + 8/54 is 172/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 21 × 18 = 378,
16/21 = 16 × 18/21 × 18 = 288/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
8/54 = 8 × 7/54 × 7 = 56/378 - Add the two like fractions:
288/378 + 56/378 = 288 + 56/378 = 344/378 - 344/378 simplified gives 172/189
- So, 16/21 + 8/54 = 172/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/21+8/54 16/21+16/54 16/42+8/54 48/21+8/54 16/21+24/54 16/63+8/54 80/21+8/54 16/21+40/54 16/21+56/54