Subtract 20/4 from 56/90
1st number: 56/90, 2nd number: 5 0/4
56/90 - 20/4 is -197/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
56/90 = 56 × 2/90 × 2 = 112/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
20/4 = 20 × 45/4 × 45 = 900/180 - Subtract the two like fractions:
112/180 - 900/180 = 112 - 900/180 = -788/180 - After reducing the fraction, the answer is -197/45
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