Subtract 20/8 from 45/70
1st number: 45/70, 2nd number: 2 4/8
45/70 - 20/8 is -13/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 8 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
45/70 = 45 × 4/70 × 4 = 180/280 - Likewise, for the 2nd fraction, since 8 × 35 = 280,
20/8 = 20 × 35/8 × 35 = 700/280 - Subtract the two like fractions:
180/280 - 700/280 = 180 - 700/280 = -520/280 - After reducing the fraction, the answer is -13/7
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