How Do You Subtract a Whole Number from a Fraction?

The whole number 9 can be rewritten as the fraction 9 over 1
LCD stands for least common denominator
The LCD for 1 and 2 is just the smallest common multiple of 1 and 2
9 over 1 needs to be multiplied by a fancy form of 1 to give it a denominator of 2
Now we can just subtract the numerators: 3 minus 18 is -15

1. Any whole number can be represented as a fraction
2. Just put the whole number over 1
1. Anything divided by 1 is itself, so 9 divided by 1 is still 9
1. LCD stands for least common denominator
1. The least common denominator is the smallest multiple of 2 and 1
1. 2 is the least common denominator of our two fractions
1. Anything divided by itself is 1
2. So if we multiply by 2/2, then the fraction will have a denominator of 2 but its value won't change
1. 2 over 2 times 9 over 1 doesn't change the value of the number, but gives the fraction a denominator of 2
2. Anything divided by itself is 1, so multiplying by 2 over 2 is like multiplying by 1
1. Since our fractions have the same denominator, we can just subtract the numerators
1. Subtract the numerators, 3 minus 18 is equal to -15
1. We've already subtracted the numerators, 3 minus 18 is equal to -15
2. The denominator remains 2

Find this difference: 3/2 - 9