Subtract 90/70 from 6/42
1st number: 6/42, 2nd number: 1 20/70
6/42 - 90/70 is -8/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
6/42 = 6 × 5/42 × 5 = 30/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Subtract the two like fractions:
30/210 - 270/210 = 30 - 270/210 = -240/210 - After reducing the fraction, the answer is -8/7
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