Subtract 72/63 from 63/70
1st number: 63/70, 2nd number: 1 9/63
63/70 - 72/63 is -17/70.
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,
63/70 = 63 × 9/70 × 9 = 567/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
72/63 = 72 × 10/63 × 10 = 720/630 - Subtract the two like fractions:
567/630 - 720/630 = 567 - 720/630 = -153/630 - After reducing the fraction, the answer is -17/70
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