Subtract 40/10 from 18/7
1st number: 2 4/7, 2nd number: 4 0/10
18/7 - 40/10 is -10/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
18/7 = 18 × 10/7 × 10 = 180/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
40/10 = 40 × 7/10 × 7 = 280/70 - Subtract the two like fractions:
180/70 - 280/70 = 180 - 280/70 = -100/70 - After reducing the fraction, the answer is -10/7
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