Add 4/20 and 12/42
4/20 + 12/42 is 17/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
4/20 = 4 × 21/20 × 21 = 84/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
12/42 = 12 × 10/42 × 10 = 120/420 - Add the two like fractions:
84/420 + 120/420 = 84 + 120/420 = 204/420 - 204/420 simplified gives 17/35
- So, 4/20 + 12/42 = 17/35
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