Subtract 21/81 from 70/35
1st number: 2 0/35, 2nd number: 21/81
70/35 - 21/81 is 47/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 81 is 2835
Next, find the equivalent fraction of both fractional numbers with denominator 2835 - For the 1st fraction, since 35 × 81 = 2835,
70/35 = 70 × 81/35 × 81 = 5670/2835 - Likewise, for the 2nd fraction, since 81 × 35 = 2835,
21/81 = 21 × 35/81 × 35 = 735/2835 - Subtract the two like fractions:
5670/2835 - 735/2835 = 5670 - 735/2835 = 4935/2835 - After reducing the fraction, the answer is 47/27
- In mixed form: 120/27
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