Add 30/16 and 90/21
1st number: 1 14/16, 2nd number: 4 6/21
30/16 + 90/21 is 345/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
30/16 = 30 × 21/16 × 21 = 630/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
90/21 = 90 × 16/21 × 16 = 1440/336 - Add the two like fractions:
630/336 + 1440/336 = 630 + 1440/336 = 2070/336 - 2070/336 simplified gives 345/56
- So, 30/16 + 90/21 = 345/56
In mixed form: 69/56
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