Add 81/63 and 42/45, Solve 1 18/63 + 42/45 as a fraction

Add 81/63 and 42/45

1^st number: 1 18/63, 2^nd number: 42/45

81/63 + 42/45 is 233/105.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 45 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 63 × 5 = 315,
81/63 = 81 × 5/63 × 5 = 405/315
Likewise, for the 2nd fraction, since 45 × 7 = 315,
42/45 = 42 × 7/45 × 7 = 294/315
Add the two like fractions:
405/315 + 294/315 = 405 + 294/315 = 699/315
699/315 simplified gives 233/105
So, 81/63 + 42/45 = 233/105
In mixed form: 223/105

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