Add 72/42 and 9/12, Solve 1 30/42 + 9/12 as a fraction

Add 72/42 and 9/12

1^st number: 1 30/42, 2^nd number: 9/12

72/42 + 9/12 is 69/28.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 42 × 2 = 84,
72/42 = 72 × 2/42 × 2 = 144/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
9/12 = 9 × 7/12 × 7 = 63/84
Add the two like fractions:
144/84 + 63/84 = 144 + 63/84 = 207/84
207/84 simplified gives 69/28
So, 72/42 + 9/12 = 69/28
In mixed form: 213/28

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