Add 84/80 and 9/84
1st number: 1 4/80, 2nd number: 9/84
84/80 + 9/84 is 81/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 84 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
84/80 = 84 × 21/80 × 21 = 1764/1680 - Likewise, for the 2nd fraction, since 84 × 20 = 1680,
9/84 = 9 × 20/84 × 20 = 180/1680 - Add the two like fractions:
1764/1680 + 180/1680 = 1764 + 180/1680 = 1944/1680 - 1944/1680 simplified gives 81/70
- So, 84/80 + 9/84 = 81/70
In mixed form: 111/70
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