Add 20/42 and 84/4
1st number: 20/42, 2nd number: 21 0/4
20/42 + 84/4 is 451/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 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 4 × 21 = 84,
84/4 = 84 × 21/4 × 21 = 1764/84 - Add the two like fractions:
40/84 + 1764/84 = 40 + 1764/84 = 1804/84 - 1804/84 simplified gives 451/21
- So, 20/42 + 84/4 = 451/21
In mixed form: 2110/21
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