Question

Work each problem according to the instructions given.B. Find the value of — x — 5 when x is 3B.

Answer 1

`\begin{gathered} a.\text{ x=-10} \\ \text{ b. -3-5=-8} \\ c.y=-(1)/(5)x-1 \\ d.\text{ x=-5y-5} \end{gathered}`

Explanation:

Solve the equations using inverse operations to solve equations. Remember that addition and subtraction are inverse operations, such as multiplication and division.

Therefore,

`\begin{gathered} a. \\ -x-5=5 \\ x=-5-5 \\ x=-10 \end{gathered}`

b. Substitute x=3 into the given expression.

`-3-5=-8`

c. Isolate y in the given equation:

`\begin{gathered} -x-5y=5 \\ 5y=-x-5 \\ y=-(1)/(5)x-1 \end{gathered}`

d. Isolate x in the given equation:

`\begin{gathered} -x-5y=5 \\ x=-5y-5 \end{gathered}`