Add 18/40 and 8/42
18/40 + 8/42 is 269/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 42 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
18/40 = 18 × 21/40 × 21 = 378/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
8/42 = 8 × 20/42 × 20 = 160/840 - Add the two like fractions:
378/840 + 160/840 = 378 + 160/840 = 538/840 - 538/840 simplified gives 269/420
- So, 18/40 + 8/42 = 269/420
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