Subtract 90/45 from 20/4
1st number: 5 0/4, 2nd number: 2 0/45
20/4 - 90/45 is 3/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
20/4 = 20 × 45/4 × 45 = 900/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
90/45 = 90 × 4/45 × 4 = 360/180 - Subtract the two like fractions:
900/180 - 360/180 = 900 - 360/180 = 540/180 - After reducing the fraction, the answer is 3/1
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