Subtract 18/70 from 1/45
1/45 - 18/70 is -74/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
1/45 = 1 × 14/45 × 14 = 14/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
18/70 = 18 × 9/70 × 9 = 162/630 - Subtract the two like fractions:
14/630 - 162/630 = 14 - 162/630 = -148/630 - After reducing the fraction, the answer is -74/315
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