Add 70/84 and 21/9
1st number: 70/84, 2nd number: 2 3/9
70/84 + 21/9 is 19/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
70/84 = 70 × 3/84 × 3 = 210/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
21/9 = 21 × 28/9 × 28 = 588/252 - Add the two like fractions:
210/252 + 588/252 = 210 + 588/252 = 798/252 - 798/252 simplified gives 19/6
- So, 70/84 + 21/9 = 19/6
In mixed form: 31/6
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