Add 3/8 and 84/63, Solve 3/8 + 1 21/63 as a fraction

Add 3/8 and 84/63

1^st number: 3/8, 2^nd number: 1 21/63

3/8 + 84/63 is 41/24.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 63 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 8 × 63 = 504,
3/8 = 3 × 63/8 × 63 = 189/504
Likewise, for the 2nd fraction, since 63 × 8 = 504,
84/63 = 84 × 8/63 × 8 = 672/504
Add the two like fractions:
189/504 + 672/504 = 189 + 672/504 = 861/504
861/504 simplified gives 41/24
So, 3/8 + 84/63 = 41/24
In mixed form: 117/24

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