Subtract 18/7 from 40/60
1st number: 40/60, 2nd number: 2 4/7
40/60 - 18/7 is -40/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 7 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
40/60 = 40 × 7/60 × 7 = 280/420 - Likewise, for the 2nd fraction, since 7 × 60 = 420,
18/7 = 18 × 60/7 × 60 = 1080/420 - Subtract the two like fractions:
280/420 - 1080/420 = 280 - 1080/420 = -800/420 - After reducing the fraction, the answer is -40/21
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