Add 72/63 and 21/72, Solve 1 9/63 + 21/72 as a fraction

Add 72/63 and 21/72

1^st number: 1 9/63, 2^nd number: 21/72

72/63 + 21/72 is 241/168.

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

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 63 × 8 = 504,
72/63 = 72 × 8/63 × 8 = 576/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
21/72 = 21 × 7/72 × 7 = 147/504
Add the two like fractions:
576/504 + 147/504 = 576 + 147/504 = 723/504
723/504 simplified gives 241/168
So, 72/63 + 21/72 = 241/168
In mixed form: 173/168

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