Subtract 30/42 from 18/35
18/35 - 30/42 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 35 × 6 = 210,
18/35 = 18 × 6/35 × 6 = 108/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
30/42 = 30 × 5/42 × 5 = 150/210 - Subtract the two like fractions:
108/210 - 150/210 = 108 - 150/210 = -42/210 - After reducing the fraction, the answer is -1/5
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