Answers

Subtract 32/40 from 40/90

40/90 - 32/40 is -16/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 90 × 4 = 360,
   40/90 = 40 × 4/90 × 4 = 160/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   32/40 = 32 × 9/40 × 9 = 288/360
4. Subtract the two like fractions:
   160/360 - 288/360 = 160 - 288/360 = -128/360
5. After reducing the fraction, the answer is -16/45

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