Add 75/80 and 84/25, Solve 75/80 + 3 9/25 as a fraction

Add 75/80 and 84/25

1^st number: 75/80, 2^nd number: 3 9/25

75/80 + 84/25 is 1719/400.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 25 is 400

Next, find the equivalent fraction of both fractional numbers with denominator 400
For the 1st fraction, since 80 × 5 = 400,
75/80 = 75 × 5/80 × 5 = 375/400
Likewise, for the 2nd fraction, since 25 × 16 = 400,
84/25 = 84 × 16/25 × 16 = 1344/400
Add the two like fractions:
375/400 + 1344/400 = 375 + 1344/400 = 1719/400
So, 75/80 + 84/25 = 1719/400
In mixed form: 4119/400

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