Question

Simplify to create an equivalent expression. 2(3r + 7) - (2 +r) Over Choose 1 answer: Intro INCORRECT (SELECTED 4r + 12 You might have confused terms. Sub B 5r + 13 809 C 5r + 12

Answer 1

The frist step in simplifying the expression is expanding the term on the left. This gives

`2(3r+7)=6r+14`

therefore, the expression becomes

`2(3r+7)-(2+r)=6r+14-(2+r)`

and since

`-(2+r)=-2-r`

the above becomes

`6r+14-2-r`

Adding/subtracting the like terms gives

`6r-r+14-2`
`5r+12`

which is our answer!