Add 40/84 and 18/42
40/84 + 18/42 is 19/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
40/84 = 40 × 1/84 × 1 = 40/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
18/42 = 18 × 2/42 × 2 = 36/84 - Add the two like fractions:
40/84 + 36/84 = 40 + 36/84 = 76/84 - 76/84 simplified gives 19/21
- So, 40/84 + 18/42 = 19/21
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