Add 70/98 and 81/80, Solve 70/98 + 1 1/80 as a fraction

Add 70/98 and 81/80

1^st number: 70/98, 2^nd number: 1 1/80

70/98 + 81/80 is 967/560.

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,
70/98 = 70 × 40/98 × 40 = 2800/3920
Likewise, for the 2nd fraction, since 80 × 49 = 3920,
81/80 = 81 × 49/80 × 49 = 3969/3920
Add the two like fractions:
2800/3920 + 3969/3920 = 2800 + 3969/3920 = 6769/3920
6769/3920 simplified gives 967/560
So, 70/98 + 81/80 = 967/560
In mixed form: 1407/560

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