Add 20/21 and 12/16
20/21 + 12/16 is 143/84.
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,
20/21 = 20 × 16/21 × 16 = 320/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
12/16 = 12 × 21/16 × 21 = 252/336 - Add the two like fractions:
320/336 + 252/336 = 320 + 252/336 = 572/336 - 572/336 simplified gives 143/84
- So, 20/21 + 12/16 = 143/84
In mixed form: 159/84
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