Subtract 15/8 from 20/90
1st number: 20/90, 2nd number: 1 7/8
20/90 - 15/8 is -119/72.
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,
15/8 = 15 × 45/8 × 45 = 675/360 - Subtract the two like fractions:
80/360 - 675/360 = 80 - 675/360 = -595/360 - After reducing the fraction, the answer is -119/72
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