Add 21/18 and 63/4, Solve 1 3/18 + 15 3/4 as a fraction

Add 21/18 and 63/4

1^st number: 1 3/18, 2^nd number: 15 3/4

21/18 + 63/4 is 203/12.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 4 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 18 × 2 = 36,
21/18 = 21 × 2/18 × 2 = 42/36
Likewise, for the 2nd fraction, since 4 × 9 = 36,
63/4 = 63 × 9/4 × 9 = 567/36
Add the two like fractions:
42/36 + 567/36 = 42 + 567/36 = 609/36
609/36 simplified gives 203/12
So, 21/18 + 63/4 = 203/12
In mixed form: 1611/12

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