Add 30/42 and 90/9
1st number: 30/42, 2nd number: 10 0/9
30/42 + 90/9 is 75/7.
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,
30/42 = 30 × 3/42 × 3 = 90/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
90/9 = 90 × 14/9 × 14 = 1260/126 - Add the two like fractions:
90/126 + 1260/126 = 90 + 1260/126 = 1350/126 - 1350/126 simplified gives 75/7
- So, 30/42 + 90/9 = 75/7
In mixed form: 105/7
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