Subtract 48/18 from 21/70
1st number: 21/70, 2nd number: 2 12/18
21/70 - 48/18 is -71/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
21/70 = 21 × 9/70 × 9 = 189/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
48/18 = 48 × 35/18 × 35 = 1680/630 - Subtract the two like fractions:
189/630 - 1680/630 = 189 - 1680/630 = -1491/630 - After reducing the fraction, the answer is -71/30
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