Subtract 20/21 from 70/2
1st number: 35 0/2, 2nd number: 20/21
70/2 - 20/21 is 715/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
70/2 = 70 × 21/2 × 21 = 1470/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
20/21 = 20 × 2/21 × 2 = 40/42 - Subtract the two like fractions:
1470/42 - 40/42 = 1470 - 40/42 = 1430/42 - After reducing the fraction, the answer is 715/21
- In mixed form: 341/21
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