Subtract 7/8 from 45/90
45/90 - 7/8 is -3/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
45/90 = 45 × 4/90 × 4 = 180/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
7/8 = 7 × 45/8 × 45 = 315/360 - Subtract the two like fractions:
180/360 - 315/360 = 180 - 315/360 = -135/360 - After reducing the fraction, the answer is -3/8
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