Add 40/12 and 81/72, Solve 3 4/12 + 1 9/72 as a fraction

Add 40/12 and 81/72

1^st number: 3 4/12, 2^nd number: 1 9/72

40/12 + 81/72 is 107/24.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 12 × 6 = 72,
40/12 = 40 × 6/12 × 6 = 240/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72
Add the two like fractions:
240/72 + 81/72 = 240 + 81/72 = 321/72
321/72 simplified gives 107/24
So, 40/12 + 81/72 = 107/24
In mixed form: 411/24

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