Add 18/42 and 30/9
1st number: 18/42, 2nd number: 3 3/9
18/42 + 30/9 is 79/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
18/42 = 18 × 3/42 × 3 = 54/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
30/9 = 30 × 14/9 × 14 = 420/126 - Add the two like fractions:
54/126 + 420/126 = 54 + 420/126 = 474/126 - 474/126 simplified gives 79/21
- So, 18/42 + 30/9 = 79/21
In mixed form: 316/21
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