Subtract 4/40 from 12/18
12/18 - 4/40 is 17/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
12/18 = 12 × 20/18 × 20 = 240/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
4/40 = 4 × 9/40 × 9 = 36/360 - Subtract the two like fractions:
240/360 - 36/360 = 240 - 36/360 = 204/360 - After reducing the fraction, the answer is 17/30
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