Add 5/42 and 18/40
5/42 + 18/40 is 239/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
5/42 = 5 × 20/42 × 20 = 100/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
18/40 = 18 × 21/40 × 21 = 378/840 - Add the two like fractions:
100/840 + 378/840 = 100 + 378/840 = 478/840 - 478/840 simplified gives 239/420
- So, 5/42 + 18/40 = 239/420
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