Add 90/70 and 12/81
1st number: 1 20/70, 2nd number: 12/81
90/70 + 12/81 is 271/189.
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,
90/70 = 90 × 81/70 × 81 = 7290/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
12/81 = 12 × 70/81 × 70 = 840/5670 - Add the two like fractions:
7290/5670 + 840/5670 = 7290 + 840/5670 = 8130/5670 - 8130/5670 simplified gives 271/189
- So, 90/70 + 12/81 = 271/189
In mixed form: 182/189
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