Subtract 42/40 from 12/9
1st number: 1 3/9, 2nd number: 1 2/40
12/9 - 42/40 is 17/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 9 × 40 = 360,
12/9 = 12 × 40/9 × 40 = 480/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
42/40 = 42 × 9/40 × 9 = 378/360 - Subtract the two like fractions:
480/360 - 378/360 = 480 - 378/360 = 102/360 - After reducing the fraction, the answer is 17/60
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