How do you simplify \frac{15}{2}-4515245?

1 Answer
Jun 14, 2017

The solution is -75/2752 .

Explanation:

To subtract numbers involving fractions, both have to have the same DENOMINATOR.

15/2152 has the denominator 2.
-4545 has the denominator 1.

Since 2 and 1 are not the same, change -4545 to have a denominator of 2 to make both fractions have the same denominator.

To give -4545 a denominator of 2, multiply -4545 by 2/222.

[We can multiply by 2/222 because 2/2 = 122=1, which means we didn't change the original problem! ]

You should end up with 15/2 - 90/2152902 .
[The 90 came from -45 * 2 = -90452=90]

Now that they have the same denominator, subtract 90 from 15 to get your new numerator, -7575!
15-90=-751590=75

Keep the DENOMINATOR as 22 because when subtracting fractions, the denominator DOES NOT CHANGE.

-75/2752 cannot be simplified, so your final answer should be -75/2752 .