Add 80/21 and 42/16
1st number: 3 17/21, 2nd number: 2 10/16
80/21 + 42/16 is 1081/168.
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,
80/21 = 80 × 16/21 × 16 = 1280/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
42/16 = 42 × 21/16 × 21 = 882/336 - Add the two like fractions:
1280/336 + 882/336 = 1280 + 882/336 = 2162/336 - 2162/336 simplified gives 1081/168
- So, 80/21 + 42/16 = 1081/168
In mixed form: 673/168
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