Question

Evaluate the expression when a = 3/10 and x = -3/20 4x-a write your answer in simplest form

Answer 1

`a=(3)/(10),\text{ x=}(-3)/(20)`
`\begin{gathered} \text{Thus, 4x-a=4(}(-3)/(20))-(3)/(10) \\ (-12)/(20)-(3)/(10) \end{gathered}`
`\begin{gathered} (-12-6)/(20) \\ (-18)/(20) \\ (-9)/(10) \end{gathered}`