Subtract 84/20 from 4/90
1st number: 4/90, 2nd number: 4 4/20
4/90 - 84/20 is -187/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
4/90 = 4 × 2/90 × 2 = 8/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
84/20 = 84 × 9/20 × 9 = 756/180 - Subtract the two like fractions:
8/180 - 756/180 = 8 - 756/180 = -748/180 - After reducing the fraction, the answer is -187/45
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