Add 21/15 and 20/63, Solve 1 6/15 + 20/63 as a fraction

Add 21/15 and 20/63

1^st number: 1 6/15, 2^nd number: 20/63

21/15 + 20/63 is 541/315.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 15 × 21 = 315,
21/15 = 21 × 21/15 × 21 = 441/315
Likewise, for the 2nd fraction, since 63 × 5 = 315,
20/63 = 20 × 5/63 × 5 = 100/315
Add the two like fractions:
441/315 + 100/315 = 441 + 100/315 = 541/315
So, 21/15 + 20/63 = 541/315
In mixed form: 1226/315

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