Subtract 18/42 from 40/5
1st number: 8 0/5, 2nd number: 18/42
40/5 - 18/42 is 53/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
40/5 = 40 × 42/5 × 42 = 1680/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210 - Subtract the two like fractions:
1680/210 - 90/210 = 1680 - 90/210 = 1590/210 - After reducing the fraction, the answer is 53/7
- In mixed form: 74/7
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