Add 40/42 and 54/84
40/42 + 54/84 is 67/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
40/42 = 40 × 2/42 × 2 = 80/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
54/84 = 54 × 1/84 × 1 = 54/84 - Add the two like fractions:
80/84 + 54/84 = 80 + 54/84 = 134/84 - 134/84 simplified gives 67/42
- So, 40/42 + 54/84 = 67/42
In mixed form: 125/42
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