Add 6/80 and 21/18, Solve 6/80 + 1 3/18 as a fraction

Add 6/80 and 21/18

1^st number: 6/80, 2^nd number: 1 3/18

6/80 + 21/18 is 149/120.

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,
6/80 = 6 × 9/80 × 9 = 54/720
Likewise, for the 2nd fraction, since 18 × 40 = 720,
21/18 = 21 × 40/18 × 40 = 840/720
Add the two like fractions:
54/720 + 840/720 = 54 + 840/720 = 894/720
894/720 simplified gives 149/120
So, 6/80 + 21/18 = 149/120
In mixed form: 129/120

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