Add 42/2 and 30/72, Solve 21 0/2 + 30/72 as a fraction

Add 42/2 and 30/72

1^st number: 21 0/2, 2^nd number: 30/72

42/2 + 30/72 is 257/12.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 72 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 2 × 36 = 72,
42/2 = 42 × 36/2 × 36 = 1512/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
30/72 = 30 × 1/72 × 1 = 30/72
Add the two like fractions:
1512/72 + 30/72 = 1512 + 30/72 = 1542/72
1542/72 simplified gives 257/12
So, 42/2 + 30/72 = 257/12
In mixed form: 215/12

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