Add 40/42 and 8/12
40/42 + 8/12 is 34/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 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 12 × 7 = 84,
8/12 = 8 × 7/12 × 7 = 56/84 - Add the two like fractions:
80/84 + 56/84 = 80 + 56/84 = 136/84 - 136/84 simplified gives 34/21
- So, 40/42 + 8/12 = 34/21
In mixed form: 113/21
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