Add 3/80 and 84/18, Solve 3/80 + 4 12/18 as a fraction

Add 3/80 and 84/18

1^st number: 3/80, 2^nd number: 4 12/18

3/80 + 84/18 is 1129/240.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 80 × 9 = 720,
3/80 = 3 × 9/80 × 9 = 27/720
Likewise, for the 2nd fraction, since 18 × 40 = 720,
84/18 = 84 × 40/18 × 40 = 3360/720
Add the two like fractions:
27/720 + 3360/720 = 27 + 3360/720 = 3387/720
3387/720 simplified gives 1129/240
So, 3/80 + 84/18 = 1129/240
In mixed form: 4169/240

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