Add 40/12 and 90/72, Solve 3 4/12 + 1 18/72 as a fraction

Add 40/12 and 90/72

1^st number: 3 4/12, 2^nd number: 1 18/72

40/12 + 90/72 is 55/12.

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,
90/72 = 90 × 1/72 × 1 = 90/72
Add the two like fractions:
240/72 + 90/72 = 240 + 90/72 = 330/72
330/72 simplified gives 55/12
So, 40/12 + 90/72 = 55/12
In mixed form: 47/12

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