Subtract 7/70 from 2/45
2/45 - 7/70 is -1/18.
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,
2/45 = 2 × 14/45 × 14 = 28/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
7/70 = 7 × 9/70 × 9 = 63/630 - Subtract the two like fractions:
28/630 - 63/630 = 28 - 63/630 = -35/630 - After reducing the fraction, the answer is -1/18
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