Subtract 18/32 from 20/90
20/90 - 18/32 is -49/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 32 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 90 × 16 = 1440,
20/90 = 20 × 16/90 × 16 = 320/1440 - Likewise, for the 2nd fraction, since 32 × 45 = 1440,
18/32 = 18 × 45/32 × 45 = 810/1440 - Subtract the two like fractions:
320/1440 - 810/1440 = 320 - 810/1440 = -490/1440 - After reducing the fraction, the answer is -49/144
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