Add 25/21 and 42/16
1st number: 1 4/21, 2nd number: 2 10/16
25/21 + 42/16 is 641/168.
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,
25/21 = 25 × 16/21 × 16 = 400/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
42/16 = 42 × 21/16 × 21 = 882/336 - Add the two like fractions:
400/336 + 882/336 = 400 + 882/336 = 1282/336 - 1282/336 simplified gives 641/168
- So, 25/21 + 42/16 = 641/168
In mixed form: 3137/168
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