Subtract 70/81 from 70/30
1st number: 2 10/30, 2nd number: 70/81
70/30 - 70/81 is 119/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 30 × 27 = 810,
70/30 = 70 × 27/30 × 27 = 1890/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
70/81 = 70 × 10/81 × 10 = 700/810 - Subtract the two like fractions:
1890/810 - 700/810 = 1890 - 700/810 = 1190/810 - After reducing the fraction, the answer is 119/81
- In mixed form: 138/81
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