Add 28/98 and 84/21, Solve 28/98 + 4 0/21 as a fraction

Add 28/98 and 84/21

1^st number: 28/98, 2^nd number: 4 0/21

28/98 + 84/21 is 30/7.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 21 is 294

Next, find the equivalent fraction of both fractional numbers with denominator 294
For the 1st fraction, since 98 × 3 = 294,
28/98 = 28 × 3/98 × 3 = 84/294
Likewise, for the 2nd fraction, since 21 × 14 = 294,
84/21 = 84 × 14/21 × 14 = 1176/294
Add the two like fractions:
84/294 + 1176/294 = 84 + 1176/294 = 1260/294
1260/294 simplified gives 30/7
So, 28/98 + 84/21 = 30/7
In mixed form: 42/7

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