Subtract 90/63 from 28/70
1st number: 28/70, 2nd number: 1 27/63
28/70 - 90/63 is -36/35.
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,
28/70 = 28 × 9/70 × 9 = 252/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
90/63 = 90 × 10/63 × 10 = 900/630 - Subtract the two like fractions:
252/630 - 900/630 = 252 - 900/630 = -648/630 - After reducing the fraction, the answer is -36/35
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