Subtract 27/7 from 36/90
1st number: 36/90, 2nd number: 3 6/7
36/90 - 27/7 is -121/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
36/90 = 36 × 7/90 × 7 = 252/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
27/7 = 27 × 90/7 × 90 = 2430/630 - Subtract the two like fractions:
252/630 - 2430/630 = 252 - 2430/630 = -2178/630 - After reducing the fraction, the answer is -121/35
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