Add 18/21 and 45/6, Solve 18/21 + 7 3/6 as a fraction

Add 18/21 and 45/6

1^st number: 18/21, 2^nd number: 7 3/6

18/21 + 45/6 is 117/14.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 21 × 2 = 42,
18/21 = 18 × 2/21 × 2 = 36/42
Likewise, for the 2nd fraction, since 6 × 7 = 42,
45/6 = 45 × 7/6 × 7 = 315/42
Add the two like fractions:
36/42 + 315/42 = 36 + 315/42 = 351/42
351/42 simplified gives 117/14
So, 18/21 + 45/6 = 117/14
In mixed form: 85/14

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