Add 81/98 and 45/80, Solve 81/98 + 45/80 as a fraction

Add 81/98 and 45/80

81/98 + 45/80 is 1089/784.

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

Next, find the equivalent fraction of both fractional numbers with denominator 3920
For the 1st fraction, since 98 × 40 = 3920,
81/98 = 81 × 40/98 × 40 = 3240/3920
Likewise, for the 2nd fraction, since 80 × 49 = 3920,
45/80 = 45 × 49/80 × 49 = 2205/3920
Add the two like fractions:
3240/3920 + 2205/3920 = 3240 + 2205/3920 = 5445/3920
5445/3920 simplified gives 1089/784
So, 81/98 + 45/80 = 1089/784
In mixed form: 1305/784

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