Add 4/12 and 20/42
4/12 + 20/42 is 17/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
4/12 = 4 × 7/12 × 7 = 28/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
20/42 = 20 × 2/42 × 2 = 40/84 - Add the two like fractions:
28/84 + 40/84 = 28 + 40/84 = 68/84 - 68/84 simplified gives 17/21
- So, 4/12 + 20/42 = 17/21
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