Add 84/63 and 75/72, Solve 1 21/63 + 1 3/72 as a fraction

Add 84/63 and 75/72

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

84/63 + 75/72 is 19/8.

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,
84/63 = 84 × 8/63 × 8 = 672/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
75/72 = 75 × 7/72 × 7 = 525/504
Add the two like fractions:
672/504 + 525/504 = 672 + 525/504 = 1197/504
1197/504 simplified gives 19/8
So, 84/63 + 75/72 = 19/8
In mixed form: 23/8

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