Subtract 9/8 from 40/45
1st number: 40/45, 2nd number: 1 1/8
40/45 - 9/8 is -17/72.
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,
40/45 = 40 × 8/45 × 8 = 320/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
9/8 = 9 × 45/8 × 45 = 405/360 - Subtract the two like fractions:
320/360 - 405/360 = 320 - 405/360 = -85/360 - After reducing the fraction, the answer is -17/72
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