Add 72/42 and 84/20
1st number: 1 30/42, 2nd number: 4 4/20
72/42 + 84/20 is 207/35.
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,
72/42 = 72 × 10/42 × 10 = 720/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
84/20 = 84 × 21/20 × 21 = 1764/420 - Add the two like fractions:
720/420 + 1764/420 = 720 + 1764/420 = 2484/420 - 2484/420 simplified gives 207/35
- So, 72/42 + 84/20 = 207/35
In mixed form: 532/35
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