Add 5/20 and 84/63, Solve 5/20 + 1 21/63 as a fraction

Add 5/20 and 84/63

1^st number: 5/20, 2^nd number: 1 21/63

5/20 + 84/63 is 19/12.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 20 × 63 = 1260,
5/20 = 5 × 63/20 × 63 = 315/1260
Likewise, for the 2nd fraction, since 63 × 20 = 1260,
84/63 = 84 × 20/63 × 20 = 1680/1260
Add the two like fractions:
315/1260 + 1680/1260 = 315 + 1680/1260 = 1995/1260
1995/1260 simplified gives 19/12
So, 5/20 + 84/63 = 19/12
In mixed form: 17/12

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