Subtract 18/42 from 20/10
1st number: 2 0/10, 2nd number: 18/42
20/10 - 18/42 is 11/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
20/10 = 20 × 21/10 × 21 = 420/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210 - Subtract the two like fractions:
420/210 - 90/210 = 420 - 90/210 = 330/210 - After reducing the fraction, the answer is 11/7
- In mixed form: 14/7
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