Add 18/30 and 21/54
18/30 + 21/54 is 89/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
18/30 = 18 × 9/30 × 9 = 162/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Add the two like fractions:
162/270 + 105/270 = 162 + 105/270 = 267/270 - 267/270 simplified gives 89/90
- So, 18/30 + 21/54 = 89/90
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