Add 70/84 and 1/81
70/84 + 1/81 is 137/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 84 × 27 = 2268,
70/84 = 70 × 27/84 × 27 = 1890/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
1/81 = 1 × 28/81 × 28 = 28/2268 - Add the two like fractions:
1890/2268 + 28/2268 = 1890 + 28/2268 = 1918/2268 - 1918/2268 simplified gives 137/162
- So, 70/84 + 1/81 = 137/162
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