Question

Can you please help me? this is HW not a test4d + 9 - d - 8

Answer 1

From the problem, we have the expression :

`4d+9-d-8`

Note that you can only combine terms if they have the same variables.

First thing to do is to regroup the terms with the same variables including the constants.

`\begin{gathered} 4d+9-d-8 \\ \Rightarrow(4d-d)+(9-8) \\ \Rightarrow(3d)+(1) \\ \Rightarrow3d+1 \end{gathered}`

The answer is 3d + 1