Question

2r+1+(-4r)+7 combine the like terms to create an equivalents expression

Answer 1

it is 8-2r

Explanation:

Solution Steps

2r+1+(−4r)+7

Combine 2r and −4r to get −2r.

−2r+1+7

Add 1 and 7 to get 8.

−2r+8

Factor

2(4−r)

Answer 2

`\begin{gathered} 2r+1+(-4r)+7=2r+1-4r+7 \\ =(2r-4r)+(1+7) \\ =(-2r)+(8) \\ =-2r+8 \end{gathered}`

Then the result is -2r+8.