Add 20/70 and 84/81
1st number: 20/70, 2nd number: 1 3/81
20/70 + 84/81 is 250/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 81 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 70 × 81 = 5670,
20/70 = 20 × 81/70 × 81 = 1620/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
84/81 = 84 × 70/81 × 70 = 5880/5670 - Add the two like fractions:
1620/5670 + 5880/5670 = 1620 + 5880/5670 = 7500/5670 - 7500/5670 simplified gives 250/189
- So, 20/70 + 84/81 = 250/189
In mixed form: 161/189
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