Add 96/21 and 21/36, Solve 4 12/21 + 21/36 as a fraction

Add 96/21 and 21/36

1^st number: 4 12/21, 2^nd number: 21/36

96/21 + 21/36 is 433/84.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 21 × 12 = 252,
96/21 = 96 × 12/21 × 12 = 1152/252
Likewise, for the 2nd fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252
Add the two like fractions:
1152/252 + 147/252 = 1152 + 147/252 = 1299/252
1299/252 simplified gives 433/84
So, 96/21 + 21/36 = 433/84
In mixed form: 513/84

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