Add 90/24 and 72/63, Solve 3 18/24 + 1 9/63 as a fraction

Add 90/24 and 72/63

1^st number: 3 18/24, 2^nd number: 1 9/63

90/24 + 72/63 is 137/28.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 63 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 24 × 21 = 504,
90/24 = 90 × 21/24 × 21 = 1890/504
Likewise, for the 2nd fraction, since 63 × 8 = 504,
72/63 = 72 × 8/63 × 8 = 576/504
Add the two like fractions:
1890/504 + 576/504 = 1890 + 576/504 = 2466/504
2466/504 simplified gives 137/28
So, 90/24 + 72/63 = 137/28
In mixed form: 425/28

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