Subtract 42/16 from 20/90
1st number: 20/90, 2nd number: 2 10/16
20/90 - 42/16 is -173/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
20/90 = 20 × 8/90 × 8 = 160/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
42/16 = 42 × 45/16 × 45 = 1890/720 - Subtract the two like fractions:
160/720 - 1890/720 = 160 - 1890/720 = -1730/720 - After reducing the fraction, the answer is -173/72
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