Add 21/18 and 3/8, Solve 1 3/18 + 3/8 as a fraction

Add 21/18 and 3/8

1^st number: 1 3/18, 2^nd number: 3/8

21/18 + 3/8 is 37/24.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 18 × 4 = 72,
21/18 = 21 × 4/18 × 4 = 84/72
Likewise, for the 2nd fraction, since 8 × 9 = 72,
3/8 = 3 × 9/8 × 9 = 27/72
Add the two like fractions:
84/72 + 27/72 = 84 + 27/72 = 111/72
111/72 simplified gives 37/24
So, 21/18 + 3/8 = 37/24
In mixed form: 113/24

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