Add 84/63 and 20/49, Solve 1 21/63 + 20/49 as a fraction

Add 84/63 and 20/49

1^st number: 1 21/63, 2^nd number: 20/49

84/63 + 20/49 is 256/147.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 49 is 441

Next, find the equivalent fraction of both fractional numbers with denominator 441
For the 1st fraction, since 63 × 7 = 441,
84/63 = 84 × 7/63 × 7 = 588/441
Likewise, for the 2nd fraction, since 49 × 9 = 441,
20/49 = 20 × 9/49 × 9 = 180/441
Add the two like fractions:
588/441 + 180/441 = 588 + 180/441 = 768/441
768/441 simplified gives 256/147
So, 84/63 + 20/49 = 256/147
In mixed form: 1109/147

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