Add 21/4 and 18/80
1st number: 5 1/4, 2nd number: 18/80
21/4 + 18/80 is 219/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
21/4 = 21 × 20/4 × 20 = 420/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
18/80 = 18 × 1/80 × 1 = 18/80 - Add the two like fractions:
420/80 + 18/80 = 420 + 18/80 = 438/80 - 438/80 simplified gives 219/40
- So, 21/4 + 18/80 = 219/40
In mixed form: 519/40
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