Add 40/63 and 21/4, Solve 40/63 + 5 1/4 as a fraction

Add 40/63 and 21/4

1^st number: 40/63, 2^nd number: 5 1/4

40/63 + 21/4 is 1483/252.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 4 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 63 × 4 = 252,
40/63 = 40 × 4/63 × 4 = 160/252
Likewise, for the 2nd fraction, since 4 × 63 = 252,
21/4 = 21 × 63/4 × 63 = 1323/252
Add the two like fractions:
160/252 + 1323/252 = 160 + 1323/252 = 1483/252
So, 40/63 + 21/4 = 1483/252
In mixed form: 5223/252

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