Add 21/35 and 56/63, Solve 21/35 + 56/63 as a fraction

Add 21/35 and 56/63

21/35 + 56/63 is 67/45.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 63 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 35 × 9 = 315,
21/35 = 21 × 9/35 × 9 = 189/315
Likewise, for the 2nd fraction, since 63 × 5 = 315,
56/63 = 56 × 5/63 × 5 = 280/315
Add the two like fractions:
189/315 + 280/315 = 189 + 280/315 = 469/315
469/315 simplified gives 67/45
So, 21/35 + 56/63 = 67/45
In mixed form: 122/45

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