Final answer:
To simplify the expression v-5-8v, combine like terms. Subtracting 8v from v gives us -7v. So, the expression simplifies to -7v-5.
Step-by-step explanation:
To simplify the expression v-5-8v, we combine like terms. Like terms are those that have the same variable raised to the same exponent. In this expression, both v terms are like terms. Subtracting 8v from v gives us -7v. So, the expression simplifies to -7v-5.