Subtract 45/8 from 20/90
1st number: 20/90, 2nd number: 5 5/8
20/90 - 45/8 is -389/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
20/90 = 20 × 4/90 × 4 = 80/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
45/8 = 45 × 45/8 × 45 = 2025/360 - Subtract the two like fractions:
80/360 - 2025/360 = 80 - 2025/360 = -1945/360 - After reducing the fraction, the answer is -389/72
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