Subtract 90/18 from 28/35
1st number: 28/35, 2nd number: 5 0/18
28/35 - 90/18 is -21/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
28/35 = 28 × 18/35 × 18 = 504/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
90/18 = 90 × 35/18 × 35 = 3150/630 - Subtract the two like fractions:
504/630 - 3150/630 = 504 - 3150/630 = -2646/630 - After reducing the fraction, the answer is -21/5
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