Question

If x=d +2 and d +2+x= y, then which of the following statements is true? A. p= 20 +4+x B. y = 2x C. 4d + 2 =) D. 60 = y A

Answer 1

We have the following equations:

`\begin{gathered} x=d+2 \\ d+2+x=y \end{gathered}`

notice that we can substitute d+2 on the second equation with x to get the following:

`\begin{gathered} (d+2)+x=y \\ \Rightarrow x+x=y \\ \Rightarrow2x=y \end{gathered}`

therefore, the statement that is true is y = 2x