Add 21/36 and 25/7, Solve 21/36 + 3 4/7 as a fraction

Add 21/36 and 25/7

1^st number: 21/36, 2^nd number: 3 4/7

21/36 + 25/7 is 349/84.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 7 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252
Likewise, for the 2nd fraction, since 7 × 36 = 252,
25/7 = 25 × 36/7 × 36 = 900/252
Add the two like fractions:
147/252 + 900/252 = 147 + 900/252 = 1047/252
1047/252 simplified gives 349/84
So, 21/36 + 25/7 = 349/84
In mixed form: 413/84

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