Subtract 84/64 from 28/90
1st number: 28/90, 2nd number: 1 20/64
28/90 - 84/64 is -721/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 64 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 90 × 32 = 2880,
28/90 = 28 × 32/90 × 32 = 896/2880 - Likewise, for the 2nd fraction, since 64 × 45 = 2880,
84/64 = 84 × 45/64 × 45 = 3780/2880 - Subtract the two like fractions:
896/2880 - 3780/2880 = 896 - 3780/2880 = -2884/2880 - After reducing the fraction, the answer is -721/720
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