Add 72/42 and 84/12, Solve 1 30/42 + 7 0/12 as a fraction

Add 72/42 and 84/12

1^st number: 1 30/42, 2^nd number: 7 0/12

72/42 + 84/12 is 61/7.

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,
84/12 = 84 × 7/12 × 7 = 588/84
Add the two like fractions:
144/84 + 588/84 = 144 + 588/84 = 732/84
732/84 simplified gives 61/7
So, 72/42 + 84/12 = 61/7
In mixed form: 85/7

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