Subtract 12/63 from 7/70
7/70 - 12/63 is -19/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
7/70 = 7 × 9/70 × 9 = 63/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
12/63 = 12 × 10/63 × 10 = 120/630 - Subtract the two like fractions:
63/630 - 120/630 = 63 - 120/630 = -57/630 - After reducing the fraction, the answer is -19/210
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