Subtract 9/14 from 18/90
18/90 - 9/14 is -31/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 14 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
18/90 = 18 × 7/90 × 7 = 126/630 - Likewise, for the 2nd fraction, since 14 × 45 = 630,
9/14 = 9 × 45/14 × 45 = 405/630 - Subtract the two like fractions:
126/630 - 405/630 = 126 - 405/630 = -279/630 - After reducing the fraction, the answer is -31/70
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