Add 30/4 and 42/72, Solve 7 2/4 + 42/72 as a fraction

Add 30/4 and 42/72

1^st number: 7 2/4, 2^nd number: 42/72

30/4 + 42/72 is 97/12.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 4 × 18 = 72,
30/4 = 30 × 18/4 × 18 = 540/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72
Add the two like fractions:
540/72 + 42/72 = 540 + 42/72 = 582/72
582/72 simplified gives 97/12
So, 30/4 + 42/72 = 97/12
In mixed form: 81/12

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