Subtract 12/70 from 10/42
10/42 - 12/70 is 1/15.
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,
10/42 = 10 × 5/42 × 5 = 50/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
12/70 = 12 × 3/70 × 3 = 36/210 - Subtract the two like fractions:
50/210 - 36/210 = 50 - 36/210 = 14/210 - After reducing the fraction, the answer is 1/15
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