Subtract 84/40 from 40/28
1st number: 1 12/28, 2nd number: 2 4/40
40/28 - 84/40 is -47/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
40/28 = 40 × 10/28 × 10 = 400/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
84/40 = 84 × 7/40 × 7 = 588/280 - Subtract the two like fractions:
400/280 - 588/280 = 400 - 588/280 = -188/280 - After reducing the fraction, the answer is -47/70
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