Simplify -3/4r + 3 - 5/6r -6

To simplify the given expression -3/4r + 3 - 5/6r - 6, we can combine like terms:

-3/4r - 5/6r + 3 - 6

To combine the terms with r, we need a common denominator for 4 and 6, which is 12. So we will multiply -3/4r by 3/3 and -5/6r by 2/2:

(-9/12r) + (-10/12r) + 3 - 6

Now we can combine the terms with r:

(-9/12r) + (-10/12r) = (-19/12r)

Therefore, the simplified expression is:

(-19/12r) + 3 - 6

Next, combine the constants:

(-19/12r) + 3 - 6 = (-19/12r) - 3

Hence, the simplified expression is -19/12r - 3.