Subtract 2/70 from 12/45
12/45 - 2/70 is 5/21.
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,
12/45 = 12 × 14/45 × 14 = 168/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
2/70 = 2 × 9/70 × 9 = 18/630 - Subtract the two like fractions:
168/630 - 18/630 = 168 - 18/630 = 150/630 - After reducing the fraction, the answer is 5/21
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