Add 18/12 and 32/21, Solve 1 6/12 + 1 11/21 as a fraction

Add 18/12 and 32/21

1^st number: 1 6/12, 2^nd number: 1 11/21

18/12 + 32/21 is 127/42.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
18/12 = 18 × 7/12 × 7 = 126/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
32/21 = 32 × 4/21 × 4 = 128/84
Add the two like fractions:
126/84 + 128/84 = 126 + 128/84 = 254/84
254/84 simplified gives 127/42
So, 18/12 + 32/21 = 127/42
In mixed form: 31/42

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