Question

Reasoning Find the sum (8x + 1) +(-9x + 7). Use pencil and paper. Explain how you know whento combine terms with variables.(8x+1)+(-9x + 7) = (simplify your answer.)

Answer 1

Let's begin by listing out the information given to us:

`\mleft(8x+1\mright)+\mleft(-9x+7\mright)`

We will open the bracket, we have:

`8x+1-9x+7`

Put like terms together, we have:

`\begin{gathered} 8x-9x+1+7 \\ \Rightarrow-x+8 \end{gathered}`

Therefore, (8x + 1) + (-9x + 7) = -x + 8