Add 12/98 and 90/21, Solve 12/98 + 4 6/21 as a fraction

Add 12/98 and 90/21

1^st number: 12/98, 2^nd number: 4 6/21

12/98 + 90/21 is 216/49.

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,
12/98 = 12 × 3/98 × 3 = 36/294
Likewise, for the 2nd fraction, since 21 × 14 = 294,
90/21 = 90 × 14/21 × 14 = 1260/294
Add the two like fractions:
36/294 + 1260/294 = 36 + 1260/294 = 1296/294
1296/294 simplified gives 216/49
So, 12/98 + 90/21 = 216/49
In mixed form: 420/49

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