Add 90/84 and 9/21
1st number: 1 6/84, 2nd number: 9/21
90/84 + 9/21 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 21 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 21 × 4 = 84,
9/21 = 9 × 4/21 × 4 = 36/84 - Add the two like fractions:
90/84 + 36/84 = 90 + 36/84 = 126/84 - 126/84 simplified gives 3/2
- So, 90/84 + 9/21 = 3/2
In mixed form: 11/2
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