Add 81/21 and 70/4
1st number: 3 18/21, 2nd number: 17 2/4
81/21 + 70/4 is 299/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
81/21 = 81 × 4/21 × 4 = 324/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
70/4 = 70 × 21/4 × 21 = 1470/84 - Add the two like fractions:
324/84 + 1470/84 = 324 + 1470/84 = 1794/84 - 1794/84 simplified gives 299/14
- So, 81/21 + 70/4 = 299/14
In mixed form: 215/14
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