Add 75/72 and 21/63, Solve 1 3/72 + 21/63 as a fraction

Add 75/72 and 21/63

1^st number: 1 3/72, 2^nd number: 21/63

75/72 + 21/63 is 11/8.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 63 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
75/72 = 75 × 7/72 × 7 = 525/504
Likewise, for the 2nd fraction, since 63 × 8 = 504,
21/63 = 21 × 8/63 × 8 = 168/504
Add the two like fractions:
525/504 + 168/504 = 525 + 168/504 = 693/504
693/504 simplified gives 11/8
So, 75/72 + 21/63 = 11/8
In mixed form: 13/8

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