Subtract 45/8 from 30/80
1st number: 30/80, 2nd number: 5 5/8
30/80 - 45/8 is -21/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 8 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
30/80 = 30 × 1/80 × 1 = 30/80 - Likewise, for the 2nd fraction, since 8 × 10 = 80,
45/8 = 45 × 10/8 × 10 = 450/80 - Subtract the two like fractions:
30/80 - 450/80 = 30 - 450/80 = -420/80 - After reducing the fraction, the answer is -21/4
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