Subtract 36/45 from 9/40
9/40 - 36/45 is -23/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
9/40 = 9 × 9/40 × 9 = 81/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
36/45 = 36 × 8/45 × 8 = 288/360 - Subtract the two like fractions:
81/360 - 288/360 = 81 - 288/360 = -207/360 - After reducing the fraction, the answer is -23/40
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