Add 81/80 and 4/98, Solve 1 1/80 + 4/98 as a fraction

Add 81/80 and 4/98

1^st number: 1 1/80, 2^nd number: 4/98

81/80 + 4/98 is 4129/3920.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 98 is 3920

Next, find the equivalent fraction of both fractional numbers with denominator 3920
For the 1st fraction, since 80 × 49 = 3920,
81/80 = 81 × 49/80 × 49 = 3969/3920
Likewise, for the 2nd fraction, since 98 × 40 = 3920,
4/98 = 4 × 40/98 × 40 = 160/3920
Add the two like fractions:
3969/3920 + 160/3920 = 3969 + 160/3920 = 4129/3920
So, 81/80 + 4/98 = 4129/3920
In mixed form: 1209/3920

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