Add 42/12 and 21/25, Solve 3 6/12 + 21/25 as a fraction

Add 42/12 and 21/25

1^st number: 3 6/12, 2^nd number: 21/25

42/12 + 21/25 is 217/50.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 25 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 12 × 25 = 300,
42/12 = 42 × 25/12 × 25 = 1050/300
Likewise, for the 2nd fraction, since 25 × 12 = 300,
21/25 = 21 × 12/25 × 12 = 252/300
Add the two like fractions:
1050/300 + 252/300 = 1050 + 252/300 = 1302/300
1302/300 simplified gives 217/50
So, 42/12 + 21/25 = 217/50
In mixed form: 417/50

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