Subtract 3/18 from 75/70
1st number: 1 5/70, 2nd number: 3/18
75/70 - 3/18 is 19/21.
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,
75/70 = 75 × 9/70 × 9 = 675/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
3/18 = 3 × 35/18 × 35 = 105/630 - Subtract the two like fractions:
675/630 - 105/630 = 675 - 105/630 = 570/630 - After reducing the fraction, the answer is 19/21
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