Add 28/21 and 35/63, Solve 1 7/21 + 35/63 as a fraction

Add 28/21 and 35/63

1^st number: 1 7/21, 2^nd number: 35/63

28/21 + 35/63 is 17/9.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 21 × 3 = 63,
28/21 = 28 × 3/21 × 3 = 84/63
Likewise, for the 2nd fraction, since 63 × 1 = 63,
35/63 = 35 × 1/63 × 1 = 35/63
Add the two like fractions:
84/63 + 35/63 = 84 + 35/63 = 119/63
119/63 simplified gives 17/9
So, 28/21 + 35/63 = 17/9
In mixed form: 18/9

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