Add 18/30 and 21/16
1st number: 18/30, 2nd number: 1 5/16
18/30 + 21/16 is 153/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 16 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
18/30 = 18 × 8/30 × 8 = 144/240 - Likewise, for the 2nd fraction, since 16 × 15 = 240,
21/16 = 21 × 15/16 × 15 = 315/240 - Add the two like fractions:
144/240 + 315/240 = 144 + 315/240 = 459/240 - 459/240 simplified gives 153/80
- So, 18/30 + 21/16 = 153/80
In mixed form: 173/80
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