Add 12/70 and 84/81
1st number: 12/70, 2nd number: 1 3/81
12/70 + 84/81 is 1142/945.
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,
12/70 = 12 × 81/70 × 81 = 972/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
84/81 = 84 × 70/81 × 70 = 5880/5670 - Add the two like fractions:
972/5670 + 5880/5670 = 972 + 5880/5670 = 6852/5670 - 6852/5670 simplified gives 1142/945
- So, 12/70 + 84/81 = 1142/945
In mixed form: 1197/945
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