Add 45/12 and 9/72, Solve 3 9/12 + 9/72 as a fraction

Add 45/12 and 9/72

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

45/12 + 9/72 is 31/8.

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,
45/12 = 45 × 6/12 × 6 = 270/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
9/72 = 9 × 1/72 × 1 = 9/72
Add the two like fractions:
270/72 + 9/72 = 270 + 9/72 = 279/72
279/72 simplified gives 31/8
So, 45/12 + 9/72 = 31/8
In mixed form: 37/8

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