Add 90/21 and 42/16
1st number: 4 6/21, 2nd number: 2 10/16
90/21 + 42/16 is 387/56.
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,
90/21 = 90 × 16/21 × 16 = 1440/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
42/16 = 42 × 21/16 × 21 = 882/336 - Add the two like fractions:
1440/336 + 882/336 = 1440 + 882/336 = 2322/336 - 2322/336 simplified gives 387/56
- So, 90/21 + 42/16 = 387/56
In mixed form: 651/56
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