Subtract 15/42 from 70/4
1st number: 17 2/4, 2nd number: 15/42
70/4 - 15/42 is 120/7.
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,
15/42 = 15 × 2/42 × 2 = 30/84 - Subtract the two like fractions:
1470/84 - 30/84 = 1470 - 30/84 = 1440/84 - After reducing the fraction, the answer is 120/7
- In mixed form: 171/7
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