Subtract 25/8 from 90/45
1st number: 2 0/45, 2nd number: 3 1/8
90/45 - 25/8 is -9/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
90/45 = 90 × 8/45 × 8 = 720/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
25/8 = 25 × 45/8 × 45 = 1125/360 - Subtract the two like fractions:
720/360 - 1125/360 = 720 - 1125/360 = -405/360 - After reducing the fraction, the answer is -9/8
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