Add 72/42 and 84/18
1st number: 1 30/42, 2nd number: 4 12/18
72/42 + 84/18 is 134/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
72/42 = 72 × 3/42 × 3 = 216/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
84/18 = 84 × 7/18 × 7 = 588/126 - Add the two like fractions:
216/126 + 588/126 = 216 + 588/126 = 804/126 - 804/126 simplified gives 134/21
- So, 72/42 + 84/18 = 134/21
In mixed form: 68/21
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