Add 21/18 and 63/28, Solve 1 3/18 + 2 7/28 as a fraction

Add 21/18 and 63/28

1^st number: 1 3/18, 2^nd number: 2 7/28

21/18 + 63/28 is 41/12.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 18 × 14 = 252,
21/18 = 21 × 14/18 × 14 = 294/252
Likewise, for the 2nd fraction, since 28 × 9 = 252,
63/28 = 63 × 9/28 × 9 = 567/252
Add the two like fractions:
294/252 + 567/252 = 294 + 567/252 = 861/252
861/252 simplified gives 41/12
So, 21/18 + 63/28 = 41/12
In mixed form: 35/12

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