Add 18/5 and 21/63, Solve 3 3/5 + 21/63 as a fraction

Add 18/5 and 21/63

1^st number: 3 3/5, 2^nd number: 21/63

18/5 + 21/63 is 59/15.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 63 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 5 × 63 = 315,
18/5 = 18 × 63/5 × 63 = 1134/315
Likewise, for the 2nd fraction, since 63 × 5 = 315,
21/63 = 21 × 5/63 × 5 = 105/315
Add the two like fractions:
1134/315 + 105/315 = 1134 + 105/315 = 1239/315
1239/315 simplified gives 59/15
So, 18/5 + 21/63 = 59/15
In mixed form: 314/15

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