Add 9/40 and 21/54
9/40 + 21/54 is 221/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 54 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
9/40 = 9 × 27/40 × 27 = 243/1080 - Likewise, for the 2nd fraction, since 54 × 20 = 1080,
21/54 = 21 × 20/54 × 20 = 420/1080 - Add the two like fractions:
243/1080 + 420/1080 = 243 + 420/1080 = 663/1080 - 663/1080 simplified gives 221/360
- So, 9/40 + 21/54 = 221/360
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