Add 3/42 and 4/20
3/42 + 4/20 is 19/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
3/42 = 3 × 10/42 × 10 = 30/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
4/20 = 4 × 21/20 × 21 = 84/420 - Add the two like fractions:
30/420 + 84/420 = 30 + 84/420 = 114/420 - 114/420 simplified gives 19/70
- So, 3/42 + 4/20 = 19/70
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