Final answer:
The value of 6x-4 when x=-5 is calculated by substituting -5 into the equation, resulting in -34.
Step-by-step explanation:
The value of 6x-4 when x=-5 is calculated by substituting -5 into the expression in place of x.
So, 6x-4 becomes 6(-5) - 4, which is -30 - 4. When we perform the subtraction, we get -34.
Therefore, the value of 6x-4 when x=-5 is -34.