Add 20/42 and 40/60
20/42 + 40/60 is 8/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
20/42 = 20 × 10/42 × 10 = 200/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
40/60 = 40 × 7/60 × 7 = 280/420 - Add the two like fractions:
200/420 + 280/420 = 200 + 280/420 = 480/420 - 480/420 simplified gives 8/7
- So, 20/42 + 40/60 = 8/7
In mixed form: 11/7
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