Subtract 28/10 from 40/45
1st number: 40/45, 2nd number: 2 8/10
40/45 - 28/10 is -86/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
40/45 = 40 × 2/45 × 2 = 80/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
28/10 = 28 × 9/10 × 9 = 252/90 - Subtract the two like fractions:
80/90 - 252/90 = 80 - 252/90 = -172/90 - After reducing the fraction, the answer is -86/45
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