Subtract 70/4 from 20/90
1st number: 20/90, 2nd number: 17 2/4
20/90 - 70/4 is -311/18.
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,
20/90 = 20 × 2/90 × 2 = 40/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
70/4 = 70 × 45/4 × 45 = 3150/180 - Subtract the two like fractions:
40/180 - 3150/180 = 40 - 3150/180 = -3110/180 - After reducing the fraction, the answer is -311/18
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