Evaluate the expression when c = -7/9 and x=2/3. Write your answer in simplest form. c-2x

Sure, let's evaluate the expression step by step:

The expression is c - 2x.

Given that c = -7/9 and x = 2/3, we substitute these values into the expression:

= -7/9 - 2*(2/3)

= -7/9 - 4/3

To subtract these fractions, we need to find a common denominator. The least common denominator for 9 and 3 is 9. So we rewrite 4/3 as 12/9:

= -7/9 - 12/9

Now, subtract the numerators:

= -19/9

So, the expression c - 2x evaluates to -19/9 when c = -7/9 and x = 2/3.