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

Add 21/18 and 6/80

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

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

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

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 18 × 40 = 720,
21/18 = 21 × 40/18 × 40 = 840/720
Likewise, for the 2nd fraction, since 80 × 9 = 720,
6/80 = 6 × 9/80 × 9 = 54/720
Add the two like fractions:
840/720 + 54/720 = 840 + 54/720 = 894/720
894/720 simplified gives 149/120
So, 21/18 + 6/80 = 149/120
In mixed form: 129/120

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