Add 90/84 and 9/42
1st number: 1 6/84, 2nd number: 9/42
90/84 + 9/42 is 9/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
90/84 = 90 × 1/84 × 1 = 90/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
9/42 = 9 × 2/42 × 2 = 18/84 - Add the two like fractions:
90/84 + 18/84 = 90 + 18/84 = 108/84 - 108/84 simplified gives 9/7
- So, 90/84 + 9/42 = 9/7
In mixed form: 12/7
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