Question

Simplify 6a + 5a - a - 5 + 2a712a-513a-512a

Answer 1

By arranging similar terms, we have

`\begin{gathered} 6a+5a+2a-a-5 \\ \text{which gives} \\ 13a-a-5 \end{gathered}`

since 13a minus a is 12a, the answer is

`12a-5`

which corresponds to option 2 from top to bottom