Add 75/21 and 9/16, Solve 3 12/21 + 9/16 as a fraction

Add 75/21 and 9/16

1^st number: 3 12/21, 2^nd number: 9/16

75/21 + 9/16 is 463/112.

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,
75/21 = 75 × 16/21 × 16 = 1200/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
9/16 = 9 × 21/16 × 21 = 189/336
Add the two like fractions:
1200/336 + 189/336 = 1200 + 189/336 = 1389/336
1389/336 simplified gives 463/112
So, 75/21 + 9/16 = 463/112
In mixed form: 415/112

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