Subtract 20/42 from 70/4
1st number: 17 2/4, 2nd number: 20/42
70/4 - 20/42 is 715/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
70/4 = 70 × 21/4 × 21 = 1470/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
20/42 = 20 × 2/42 × 2 = 40/84 - Subtract the two like fractions:
1470/84 - 40/84 = 1470 - 40/84 = 1430/84 - After reducing the fraction, the answer is 715/42
- In mixed form: 171/42
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