Subtract 56/15 from 70/42
1st number: 1 28/42, 2nd number: 3 11/15
70/42 - 56/15 is -31/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
70/42 = 70 × 5/42 × 5 = 350/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
56/15 = 56 × 14/15 × 14 = 784/210 - Subtract the two like fractions:
350/210 - 784/210 = 350 - 784/210 = -434/210 - After reducing the fraction, the answer is -31/15
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