Add 21/18 and 4/80, Solve 1 3/18 + 4/80 as a fraction

Add 21/18 and 4/80

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

21/18 + 4/80 is 73/60.

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,
4/80 = 4 × 9/80 × 9 = 36/720
Add the two like fractions:
840/720 + 36/720 = 840 + 36/720 = 876/720
876/720 simplified gives 73/60
So, 21/18 + 4/80 = 73/60
In mixed form: 113/60

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