Subtract 9/5 from 7/90
1st number: 7/90, 2nd number: 1 4/5
7/90 - 9/5 is -31/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 5 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
7/90 = 7 × 1/90 × 1 = 7/90 - Likewise, for the 2nd fraction, since 5 × 18 = 90,
9/5 = 9 × 18/5 × 18 = 162/90 - Subtract the two like fractions:
7/90 - 162/90 = 7 - 162/90 = -155/90 - After reducing the fraction, the answer is -31/18
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