Subtract 4/90 from 84/45
1st number: 1 39/45, 2nd number: 4/90
84/45 - 4/90 is 82/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
84/45 = 84 × 2/45 × 2 = 168/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
4/90 = 4 × 1/90 × 1 = 4/90 - Subtract the two like fractions:
168/90 - 4/90 = 168 - 4/90 = 164/90 - After reducing the fraction, the answer is 82/45
- In mixed form: 137/45
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