Subtract 70/35 from 20/40
1st number: 20/40, 2nd number: 2 0/35
20/40 - 70/35 is -3/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 35 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
20/40 = 20 × 7/40 × 7 = 140/280 - Likewise, for the 2nd fraction, since 35 × 8 = 280,
70/35 = 70 × 8/35 × 8 = 560/280 - Subtract the two like fractions:
140/280 - 560/280 = 140 - 560/280 = -420/280 - After reducing the fraction, the answer is -3/2
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