Subtract 90/45 from 4/5
1st number: 4/5, 2nd number: 2 0/45
4/5 - 90/45 is -6/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
4/5 = 4 × 9/5 × 9 = 36/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
90/45 = 90 × 1/45 × 1 = 90/45 - Subtract the two like fractions:
36/45 - 90/45 = 36 - 90/45 = -54/45 - After reducing the fraction, the answer is -6/5
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