Add 18/21 and 9/16
18/21 + 9/16 is 159/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
18/21 = 18 × 16/21 × 16 = 288/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
9/16 = 9 × 21/16 × 21 = 189/336 - Add the two like fractions:
288/336 + 189/336 = 288 + 189/336 = 477/336 - 477/336 simplified gives 159/112
- So, 18/21 + 9/16 = 159/112
In mixed form: 147/112
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