Add 20/42 and 20/84
20/42 + 20/84 is 5/7.
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,
20/42 = 20 × 2/42 × 2 = 40/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
20/84 = 20 × 1/84 × 1 = 20/84 - Add the two like fractions:
40/84 + 20/84 = 40 + 20/84 = 60/84 - 60/84 simplified gives 5/7
- So, 20/42 + 20/84 = 5/7
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