Add 21/42 and 25/7, Solve 21/42 + 3 4/7 as a fraction

Add 21/42 and 25/7

1^st number: 21/42, 2^nd number: 3 4/7

21/42 + 25/7 is 57/14.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 42 × 1 = 42,
21/42 = 21 × 1/42 × 1 = 21/42
Likewise, for the 2nd fraction, since 7 × 6 = 42,
25/7 = 25 × 6/7 × 6 = 150/42
Add the two like fractions:
21/42 + 150/42 = 21 + 150/42 = 171/42
171/42 simplified gives 57/14
So, 21/42 + 25/7 = 57/14
In mixed form: 41/14

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