Add 18/12 and 20/72, Solve 1 6/12 + 20/72 as a fraction

Add 18/12 and 20/72

1^st number: 1 6/12, 2^nd number: 20/72

18/12 + 20/72 is 16/9.

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,
18/12 = 18 × 6/12 × 6 = 108/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
20/72 = 20 × 1/72 × 1 = 20/72
Add the two like fractions:
108/72 + 20/72 = 108 + 20/72 = 128/72
128/72 simplified gives 16/9
So, 18/12 + 20/72 = 16/9
In mixed form: 17/9

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