Add 72/42 and 84/72, Solve 1 30/42 + 1 12/72 as a fraction

Add 72/42 and 84/72

1^st number: 1 30/42, 2^nd number: 1 12/72

72/42 + 84/72 is 121/42.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 42 × 12 = 504,
72/42 = 72 × 12/42 × 12 = 864/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
84/72 = 84 × 7/72 × 7 = 588/504
Add the two like fractions:
864/504 + 588/504 = 864 + 588/504 = 1452/504
1452/504 simplified gives 121/42
So, 72/42 + 84/72 = 121/42
In mixed form: 237/42

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