Add 70/81 and 90/12
1st number: 70/81, 2nd number: 7 6/12
70/81 + 90/12 is 1355/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 12 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
70/81 = 70 × 4/81 × 4 = 280/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
90/12 = 90 × 27/12 × 27 = 2430/324 - Add the two like fractions:
280/324 + 2430/324 = 280 + 2430/324 = 2710/324 - 2710/324 simplified gives 1355/162
- So, 70/81 + 90/12 = 1355/162
In mixed form: 859/162
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