Subtract 90/16 from 7/40
1st number: 7/40, 2nd number: 5 10/16
7/40 - 90/16 is -109/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
7/40 = 7 × 2/40 × 2 = 14/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
90/16 = 90 × 5/16 × 5 = 450/80 - Subtract the two like fractions:
14/80 - 450/80 = 14 - 450/80 = -436/80 - After reducing the fraction, the answer is -109/20
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