Add 18/28 and 9/40
18/28 + 9/40 is 243/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
18/28 = 18 × 10/28 × 10 = 180/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
9/40 = 9 × 7/40 × 7 = 63/280 - Add the two like fractions:
180/280 + 63/280 = 180 + 63/280 = 243/280 - So, 18/28 + 9/40 = 243/280
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