Subtract 70/15 from 70/40
1st number: 1 30/40, 2nd number: 4 10/15
70/40 - 70/15 is -35/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
70/40 = 70 × 3/40 × 3 = 210/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
70/15 = 70 × 8/15 × 8 = 560/120 - Subtract the two like fractions:
210/120 - 560/120 = 210 - 560/120 = -350/120 - After reducing the fraction, the answer is -35/12
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