Add 84/80 and 90/75, Solve 1 4/80 + 1 15/75 as a fraction

Add 84/80 and 90/75

1^st number: 1 4/80, 2^nd number: 1 15/75

84/80 + 90/75 is 9/4.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 75 is 1200

Next, find the equivalent fraction of both fractional numbers with denominator 1200
For the 1st fraction, since 80 × 15 = 1200,
84/80 = 84 × 15/80 × 15 = 1260/1200
Likewise, for the 2nd fraction, since 75 × 16 = 1200,
90/75 = 90 × 16/75 × 16 = 1440/1200
Add the two like fractions:
1260/1200 + 1440/1200 = 1260 + 1440/1200 = 2700/1200
2700/1200 simplified gives 9/4
So, 84/80 + 90/75 = 9/4
In mixed form: 21/4

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