Subtract 42/9 from 90/40
1st number: 2 10/40, 2nd number: 4 6/9
90/40 - 42/9 is -29/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
90/40 = 90 × 9/40 × 9 = 810/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
42/9 = 42 × 40/9 × 40 = 1680/360 - Subtract the two like fractions:
810/360 - 1680/360 = 810 - 1680/360 = -870/360 - After reducing the fraction, the answer is -29/12
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