Subtract 75/63 from 72/70
1st number: 1 2/70, 2nd number: 1 12/63
72/70 - 75/63 is -17/105.
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,
72/70 = 72 × 9/70 × 9 = 648/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
75/63 = 75 × 10/63 × 10 = 750/630 - Subtract the two like fractions:
648/630 - 750/630 = 648 - 750/630 = -102/630 - After reducing the fraction, the answer is -17/105
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