Add 7/63 and 70/21, Solve 7/63 + 3 7/21 as a fraction

Add 7/63 and 70/21

1^st number: 7/63, 2^nd number: 3 7/21

7/63 + 70/21 is 31/9.

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

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 63 × 1 = 63,
7/63 = 7 × 1/63 × 1 = 7/63
Likewise, for the 2nd fraction, since 21 × 3 = 63,
70/21 = 70 × 3/21 × 3 = 210/63
Add the two like fractions:
7/63 + 210/63 = 7 + 210/63 = 217/63
217/63 simplified gives 31/9
So, 7/63 + 70/21 = 31/9
In mixed form: 34/9

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