Add 70/21 and 84/27
1st number: 3 7/21, 2nd number: 3 3/27
70/21 + 84/27 is 58/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 21 × 9 = 189,
70/21 = 70 × 9/21 × 9 = 630/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
84/27 = 84 × 7/27 × 7 = 588/189 - Add the two like fractions:
630/189 + 588/189 = 630 + 588/189 = 1218/189 - 1218/189 simplified gives 58/9
- So, 70/21 + 84/27 = 58/9
In mixed form: 64/9
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